/*
 * HyTest1PopMeanDialog.java
 *
 * Created on May 27, 2008, 12:41 PM
 */

package org.statcato.dialogs.stat;

import org.statcato.*;
import org.statcato.spreadsheet.*;
import org.statcato.statistics.inferential.*;
import org.statcato.utils.HelperFunctions;
import java.util.*;
import javax.swing.*;
import org.statcato.statistics.BasicStatistics;

/**
 * A dialog for testing claims about a population mean for the case 
 * population standard deviation is known and the case when it is unknown.
 * Allows the user to specify data samples in a column of a Datasheet,
 * or provide summary data values.  The user must also provide
 * the confidence level, alternative hypothesis, and hypothesized mean.
 * Computes and displays in log window the significance level, 
 * critical value, test statistic, and p-Value.
 * 
 * @author  Margaret Yau
 * @version %I%, %G%
 * @see org.statcato.statistics.inferential.HypothesisTest1MeanSigmaUnknown
 * @see org.statcato.statistics.inferential.HypothesisTest1MeanSigmaKnown
 * 
 * @since 1.0
 */
public class HyTest1PopMeanDialog extends StatcatoDialog {
   
    /** Creates new form HyTest1PopMeanDialog */
    public HyTest1PopMeanDialog(java.awt.Frame parent, boolean modal,
            Statcato mTab) {
        super(parent, modal);
        initComponents();
        
        app = mTab;
        ParentSpreadsheet = app.getSpreadsheet(); 
        
        ButtonGroup group1 = new ButtonGroup();
        group1.add(SampleRadioButton);
        group1.add(SummaryRadioButton);
        
        ButtonGroup group2 = new ButtonGroup();
        group2.add(KnownRadioButton);
        group2.add(UnknownRadioButton);
        
        ButtonGroup group3 = new ButtonGroup();
        group3.add(SigRadioButton);
        group3.add(ConfRadioButton);
        
        ParentSpreadsheet.populateComboBox(ColumnComboBox);
        
        getRootPane().setDefaultButton(OKButton);
        setHelpFile("stat-hytest-mean");
        name = "Hypothesis Test: 1-Population Mean";
        description = "For performing calculations for testing claims about a population mean.";
        helpStrings.add("If individual samples are entered in a single column " +
                "of the datasheet, select the Samples in column: radio button, " +
                "and select the column name in the drop-down menu.");
        helpStrings.add("To use summary statistics of the sample data, " +
                "select the Summarized sample data: radio button, and " +
                "input the sample size, mean, and standard deviation " +
                "in the provided text fields.");
        helpStrings.add("Indicate whether the population standard deviation " +
                "is known.");
        helpStrings.add("Specify the significance or confidence level.");
        helpStrings.add("Select the form of the alternative hypothesis " +
                "and enter the hypothesized population mean in the provided text box.");
    }

    /**
     * Updates elements on the dialog so that they have the most
     * current values.  Called by {@link #setVisible} to make
     * sure the dialog displays current values when made visible again.
     * 
     * @see #setVisible(boolean)
     */
    @Override
    public void updateElements() {
        updateComboBox(ColumnComboBox);
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        OKButton = new javax.swing.JButton();
        CancelButton = new javax.swing.JButton();
        jPanel1 = new javax.swing.JPanel();
        sTextField = new javax.swing.JTextField();
        SampleMeanTextField = new javax.swing.JTextField();
        sLabel = new javax.swing.JLabel();
        ColumnComboBox = new javax.swing.JComboBox();
        SampleMeanLabel = new javax.swing.JLabel();
        SampleSizeTextField = new javax.swing.JTextField();
        SampleRadioButton = new javax.swing.JRadioButton();
        SampleSizeLabel = new javax.swing.JLabel();
        SummaryRadioButton = new javax.swing.JRadioButton();
        jPanel2 = new javax.swing.JPanel();
        SigmaTextField = new javax.swing.JTextField();
        jLabel5 = new javax.swing.JLabel();
        jLabel7 = new javax.swing.JLabel();
        KnownRadioButton = new javax.swing.JRadioButton();
        jLabel4 = new javax.swing.JLabel();
        UnknownRadioButton = new javax.swing.JRadioButton();
        jPanel3 = new javax.swing.JPanel();
        SigLabel = new javax.swing.JLabel();
        ConfidenceTextField = new javax.swing.JTextField();
        ConfRadioButton = new javax.swing.JRadioButton();
        SigRadioButton = new javax.swing.JRadioButton();
        SigTextField = new javax.swing.JTextField();
        ConfLabel = new javax.swing.JLabel();
        jPanel4 = new javax.swing.JPanel();
        HyMeanTextField = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        AltComboBox = new javax.swing.JComboBox();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setTitle("Hypothesis Test: 1-Population Mean");

        OKButton.setText("OK");
        OKButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                OKButtonActionPerformed(evt);
            }
        });

        CancelButton.setText("Cancel");
        CancelButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                CancelButtonActionPerformed(evt);
            }
        });

        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Inputs"));

        sTextField.setEnabled(false);

        SampleMeanTextField.setEnabled(false);

        sLabel.setText("Standard deviation:");
        sLabel.setEnabled(false);

        SampleMeanLabel.setText("Mean:");
        SampleMeanLabel.setEnabled(false);

        SampleSizeTextField.setEnabled(false);

        SampleRadioButton.setSelected(true);
        SampleRadioButton.setText("Samples in column:");
        SampleRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                SampleRadioButtonStateChanged(evt);
            }
        });

        SampleSizeLabel.setText("Size:");
        SampleSizeLabel.setEnabled(false);

        SummaryRadioButton.setText("Summarized sample data:");
        SummaryRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                SummaryRadioButtonStateChanged(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(21, 21, 21)
                        .addComponent(ColumnComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                    .addComponent(SampleRadioButton))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 42, Short.MAX_VALUE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addComponent(SummaryRadioButton)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(13, 13, 13)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(SampleMeanLabel)
                                    .addComponent(SampleSizeLabel))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addComponent(SampleSizeTextField, javax.swing.GroupLayout.DEFAULT_SIZE, 70, Short.MAX_VALUE)
                                    .addComponent(SampleMeanTextField, javax.swing.GroupLayout.DEFAULT_SIZE, 68, Short.MAX_VALUE)
                                    .addComponent(sTextField)))
                            .addComponent(sLabel))))
                .addContainerGap())
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(SampleRadioButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(ColumnComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(SummaryRadioButton)
                        .addGap(18, 18, 18)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(SampleSizeLabel)
                            .addComponent(SampleSizeTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(SampleMeanLabel)
                            .addComponent(SampleMeanTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(sLabel)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(sTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Population Standard Deviation"));

        SigmaTextField.setEnabled(false);

        jLabel5.setText("- use z distribution");

        jLabel7.setText("- use t distribution");

        KnownRadioButton.setText("Known:");
        KnownRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                KnownRadioButtonStateChanged(evt);
            }
        });

        jLabel4.setText("Population standard deviation:");

        UnknownRadioButton.setSelected(true);
        UnknownRadioButton.setText("Unknown");
        UnknownRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                UnknownRadioButtonStateChanged(evt);
            }
        });

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel4)
                    .addGroup(jPanel2Layout.createSequentialGroup()
                        .addGap(12, 12, 12)
                        .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel2Layout.createSequentialGroup()
                                .addComponent(KnownRadioButton)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(SigmaTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(UnknownRadioButton))
                        .addGap(26, 26, 26)
                        .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(jLabel5)
                            .addComponent(jLabel7))))
                .addContainerGap(20, Short.MAX_VALUE))
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel4)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(SigmaTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(KnownRadioButton)
                    .addComponent(jLabel5))
                .addGap(5, 5, 5)
                .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(UnknownRadioButton)
                    .addComponent(jLabel7))
                .addContainerGap(75, Short.MAX_VALUE))
        );

        jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder("Significance"));

        SigLabel.setText("0 - 1.00 (e.g. 0.05)");

        ConfidenceTextField.setText("0.95");
        ConfidenceTextField.setEnabled(false);
        ConfidenceTextField.addFocusListener(new java.awt.event.FocusAdapter() {
            public void focusLost(java.awt.event.FocusEvent evt) {
                ConfidenceTextFieldFocusLost(evt);
            }
        });

        ConfRadioButton.setText("Confidence Level:");
        ConfRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                ConfRadioButtonStateChanged(evt);
            }
        });

        SigRadioButton.setSelected(true);
        SigRadioButton.setText("Significance Level:");
        SigRadioButton.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                SigRadioButtonStateChanged(evt);
            }
        });

        SigTextField.setText("0.05");
        SigTextField.addFocusListener(new java.awt.event.FocusAdapter() {
            public void focusLost(java.awt.event.FocusEvent evt) {
                SigTextFieldFocusLost(evt);
            }
        });

        ConfLabel.setText("0 - 1.00 (e.g. 0.95)");
        ConfLabel.setEnabled(false);

        javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
        jPanel3.setLayout(jPanel3Layout);
        jPanel3Layout.setHorizontalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel3Layout.createSequentialGroup()
                        .addComponent(ConfRadioButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 4, Short.MAX_VALUE)
                        .addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel3Layout.createSequentialGroup()
                        .addComponent(SigRadioButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(SigTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(SigLabel)
                    .addComponent(ConfLabel))
                .addContainerGap())
        );

        jPanel3Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {ConfidenceTextField, SigTextField});

        jPanel3Layout.setVerticalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
                .addGap(6, 6, 6)
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(SigRadioButton)
                    .addComponent(SigTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(SigLabel))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(ConfidenceTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(ConfRadioButton)
                    .addComponent(ConfLabel))
                .addContainerGap(17, Short.MAX_VALUE))
        );

        jPanel4.setBorder(javax.swing.BorderFactory.createTitledBorder("Alternative Hypothesis"));

        jLabel3.setText("Alternative Hypothesis:");

        jLabel2.setText("Hypothesized Mean:");

        AltComboBox.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Less than", "Not Equal to", "Greater than" }));
        AltComboBox.setSelectedIndex(1);

        javax.swing.GroupLayout jPanel4Layout = new javax.swing.GroupLayout(jPanel4);
        jPanel4.setLayout(jPanel4Layout);
        jPanel4Layout.setHorizontalGroup(
            jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel4Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel2, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel3, javax.swing.GroupLayout.Alignment.TRAILING))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(AltComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(HyMeanTextField, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(78, Short.MAX_VALUE))
        );
        jPanel4Layout.setVerticalGroup(
            jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel4Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(AltComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(HyMeanTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap())
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jPanel4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(228, 228, 228)
                        .addComponent(OKButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(CancelButton)))
                .addContainerGap())
        );

        layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {CancelButton, OKButton});

        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jPanel4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(OKButton)
                    .addComponent(CancelButton))
                .addGap(39, 39, 39))
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void OKButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_OKButtonActionPerformed
        app.compoundEdit = new DialogEdit("hypothesis test 1 mean");
        
        int n = 0, typeTest = 0;
        double s = 0, mean = 0, confidenceLevel = 0, mu = 0;
        Vector<Double> ColumnVector = new Vector<Double>();
        
        String heading = "Hypothesis Test - One Population Mean:";
        String text = "";
        
        if (ConfRadioButton.isSelected()) {
            // get confidence level from dialog
            try {
                confidenceLevel = Double.parseDouble(ConfidenceTextField.getText());
            } catch (NumberFormatException e) {
                app.showErrorDialog("Enter a number between 0 and 1 for the confidence level.");
                return;
            }
            if (confidenceLevel <= 0 || confidenceLevel >= 1) {
                app.showErrorDialog("Enter a number between 0 and 1 for the confidence level.");
                return;
            }
        }
        else {
            // get confidence level from dialog
            try {
                confidenceLevel = 1 - Double.parseDouble(SigTextField.getText());
            } catch (NumberFormatException e) {
                app.showErrorDialog("Enter a number between 0 and 1 for the significance level.");
                return;
            }
            if (confidenceLevel <= 0 || confidenceLevel >= 1) {
                app.showErrorDialog("Enter a number between 0 and 1 for the significance level.");
                return;
            }
        }
        heading += "  confidence level = " + 
                String.format("%."+
                HelperFunctions.getNumDecimalPlaces(ConfidenceTextField.getText())+"f", 
                confidenceLevel);
        
        // get input
        if (SampleRadioButton.isSelected()) {
            // get data for selected input column
            String columnLabel = ColumnComboBox.getSelectedItem().toString();
            if (columnLabel.equals("")) { // no input variable
                app.showErrorDialog("Select the input column.");
                return;
            }
            int column = ParentSpreadsheet.parseColumnNumber(columnLabel);
            Vector<Cell> StrColumnVector = ParentSpreadsheet.getColumn(column);
            ColumnVector = HelperFunctions.ConvertInputVectorToDoubles(StrColumnVector);
            if (ColumnVector == null) {
                app.showErrorDialog("Invalid input column " + columnLabel +
                        ": all data must be numbers.");
                return;
            }
            text += "Input: " + columnLabel + "<br>";
            n = BasicStatistics.Nnonmissing(ColumnVector);
            mean = BasicStatistics.mean(ColumnVector).doubleValue();
            s = BasicStatistics.stdev(ColumnVector).doubleValue();
        } else {
            // get summary data
            try {
                n = Integer.parseInt(SampleSizeTextField.getText());
                mean = Double.parseDouble(SampleMeanTextField.getText());
            } catch (NumberFormatException e) {
                app.showErrorDialog("Invalid summary data.");
                return;
            }
            text += "Input: Summary data" + "<br>";
        }
        // get hypothesized mean
        try {
            mu = Double.parseDouble(HyMeanTextField.getText());            
        }
        catch (NumberFormatException e) {
            app.showErrorDialog("Enter a valid number for the hypothesized mean.");
            return;
        }
        // get type of test
        typeTest = AltComboBox.getSelectedIndex();
        
        if (KnownRadioButton.isSelected()) {    // sigma known
            text += "<b>&sigma; known</b> (using z distribution)<br>";
            try {
                double sigma = Double.parseDouble(SigmaTextField.getText());
                text += "Assumed population standard deviation &sigma; = " + sigma + "<br>";
                HypothesisTest1MeanSigmaKnown ht = new 
                    HypothesisTest1MeanSigmaKnown(n, mu, sigma, 
                    confidenceLevel, typeTest);
                text += "Null hypothesis: &mu; = " + mu + "<br>";
                text += "Alternative hypothesis: &mu; ";
                if (typeTest == HypothesisTest.LEFT_TAIL)
                    text += "&lt;";
                else if (typeTest == HypothesisTest.RIGHT_TAIL)
                    text += "&gt;";
                else
                    text += "&ne;";
                text += " " + mu + "<br>";
                text += "<br><table border='1'>";
                text += "<tr><td>N</td><td>Sample Mean</td><td>Stdev &sigma;</td>";
                text += "<td>Significance Level</td></td><td>Critical Value</td>" +
                        "<td>Test Statistic</td>" + "<td>p-Value</td></tr>";
                text += "<tr><td>" + n + "</td><td>" +
                    HelperFunctions.formatFloat(mean, 3) + "</td><td>" +
                    HelperFunctions.formatFloat(sigma, 3) + "</td><td>" +
                    HelperFunctions.formatFloat(1-confidenceLevel, 2)  + 
                    "</td><td>" + ht.criticalValue()
                    + "</td><td>" + HelperFunctions.formatFloat(ht.testStatistics(mean), 3)
                    + "</td><td>" + HelperFunctions.formatFloat(ht.pValue(mean), 4)
                    + "</td></tr></table>";
            } catch (NumberFormatException e) {
                app.showErrorDialog("Enter a valid population standard deviation.");
                return;
            }
            
            
        } else {  // sigma unknown
            text += "<b>&sigma; unknown</b> (using t distribution) <br>";
            if (SummaryRadioButton.isSelected()) {
                try {
                    s = Double.parseDouble(sTextField.getText());                    
                } catch (NumberFormatException e) {
                    app.showErrorDialog("Enter a valid sample standard deviation.");
                    return;
                }
            }
            
            //text += "Sample standard deviation s = " + s + "<br>";
            HypothesisTest1MeanSigmaUnknown ht = new
                    HypothesisTest1MeanSigmaUnknown(n, mu, s,
                    confidenceLevel, typeTest);
            text += "Null hypothesis: &mu; = " + mu + "<br>";
            text += "Alternative hypothesis: &mu; ";
            if (typeTest == HypothesisTest.LEFT_TAIL)
                text += "&lt;";
            else if (typeTest == HypothesisTest.RIGHT_TAIL)
                text += "&gt;";
            else
                text += "&ne;";
            text += " " + mu + "<br>";
            text += "<br><table border='1'>";
            text += "<tr><td>N</td><td>Sample Mean</td><td>Stdev s</td>";
            text += "<td>Significance Level</td></td><td>Critical Value</td>" +
                    "<td>Test Statistic</td>" + "<td>p-Value</td></tr>";
            text += "<tr><td>" + n + "</td><td>" +
                    HelperFunctions.formatFloat(mean, 3) + "</td><td>" +
                    HelperFunctions.formatFloat(s, 3) + "</td><td>" +
                    HelperFunctions.formatFloat(1-confidenceLevel, 2)  +
                    "</td><td>" + ht.criticalValue()
                    + "</td><td>" + HelperFunctions.formatFloat(ht.testStatistics(mean), 3)
                    + "</td><td>" + HelperFunctions.formatFloat(ht.pValue(mean), 4)
                    + "</td></tr></table>";                              
        }
        
        app.addLogParagraph(heading, text);

        app.compoundEdit.end();
        app.addCompoundEdit(app.compoundEdit);
        
        setVisible(false);
    }//GEN-LAST:event_OKButtonActionPerformed

    private void CancelButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_CancelButtonActionPerformed
        setVisible(false);
    }//GEN-LAST:event_CancelButtonActionPerformed

    private void SampleRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SampleRadioButtonStateChanged
        if (SampleRadioButton.isSelected()) {
            ColumnComboBox.setEnabled(true);
        } else {
            ColumnComboBox.setEnabled(false);
        }
    }//GEN-LAST:event_SampleRadioButtonStateChanged

    private void SummaryRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SummaryRadioButtonStateChanged
        if (SummaryRadioButton.isSelected()) {
            SampleSizeLabel.setEnabled(true);
            SampleSizeTextField.setEnabled(true);
            SampleMeanLabel.setEnabled(true);
            SampleMeanTextField.setEnabled(true);
            if (UnknownRadioButton.isSelected()) {
                sLabel.setEnabled(true);
                sTextField.setEnabled(true);
            } else {
                sLabel.setEnabled(false);
                sTextField.setEnabled(false);
            }
        } else  {
            SampleSizeLabel.setEnabled(false);
            SampleSizeTextField.setEnabled(false);
            SampleMeanLabel.setEnabled(false);
            SampleMeanTextField.setEnabled(false);
            sLabel.setEnabled(false);
            sTextField.setEnabled(false);
        }
    }//GEN-LAST:event_SummaryRadioButtonStateChanged

    private void UnknownRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_UnknownRadioButtonStateChanged
        if (UnknownRadioButton.isSelected()) {
            if (SummaryRadioButton.isSelected()) {
                sLabel.setEnabled(true);
                sTextField.setEnabled(true);
            } else {
                sLabel.setEnabled(false);
                sTextField.setEnabled(false);
            }
        } else {
            sLabel.setEnabled(false);
            sTextField.setEnabled(false);
        }
    }//GEN-LAST:event_UnknownRadioButtonStateChanged

    private void KnownRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_KnownRadioButtonStateChanged
        if (KnownRadioButton.isSelected()) {
            SigmaTextField.setEnabled(true);
        } else {
            SigmaTextField.setEnabled(false);
        }
    }//GEN-LAST:event_KnownRadioButtonStateChanged

    private void SigRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_SigRadioButtonStateChanged
        if (SigRadioButton.isSelected()) {
            SigTextField.setEnabled(true);
            SigLabel.setEnabled(true);
        }
        else {
            SigTextField.setEnabled(false);
            SigLabel.setEnabled(false);
        }            
    }//GEN-LAST:event_SigRadioButtonStateChanged

    private void ConfRadioButtonStateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_ConfRadioButtonStateChanged
        if (ConfRadioButton.isSelected()) {
            ConfidenceTextField.setEnabled(true);
            ConfLabel.setEnabled(true);
        }
        else {
            ConfidenceTextField.setEnabled(false);
            ConfLabel.setEnabled(false);
        }
    }//GEN-LAST:event_ConfRadioButtonStateChanged

    private void SigTextFieldFocusLost(java.awt.event.FocusEvent evt) {//GEN-FIRST:event_SigTextFieldFocusLost
        try {
            String sigString = SigTextField.getText();
            double sig = Double.parseDouble(sigString);
            double conf = 1 - sig;
            ConfidenceTextField.setText(
                     String.format("%."+HelperFunctions.getNumDecimalPlaces(sigString)+"f", conf));
        }
        catch (NumberFormatException e) {    
        }
    }//GEN-LAST:event_SigTextFieldFocusLost

    private void ConfidenceTextFieldFocusLost(java.awt.event.FocusEvent evt) {//GEN-FIRST:event_ConfidenceTextFieldFocusLost
        try {
            String confString = ConfidenceTextField.getText();
            double conf = Double.parseDouble(confString);
            double sig = 1.0 - conf;
            SigTextField.setText( 
                    String.format("%."+HelperFunctions.getNumDecimalPlaces(confString)+"f", sig));
        }
        catch (NumberFormatException e) {           
        }
    }//GEN-LAST:event_ConfidenceTextFieldFocusLost
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JComboBox AltComboBox;
    private javax.swing.JButton CancelButton;
    private javax.swing.JComboBox ColumnComboBox;
    private javax.swing.JLabel ConfLabel;
    private javax.swing.JRadioButton ConfRadioButton;
    private javax.swing.JTextField ConfidenceTextField;
    private javax.swing.JTextField HyMeanTextField;
    private javax.swing.JRadioButton KnownRadioButton;
    private javax.swing.JButton OKButton;
    private javax.swing.JLabel SampleMeanLabel;
    private javax.swing.JTextField SampleMeanTextField;
    private javax.swing.JRadioButton SampleRadioButton;
    private javax.swing.JLabel SampleSizeLabel;
    private javax.swing.JTextField SampleSizeTextField;
    private javax.swing.JLabel SigLabel;
    private javax.swing.JRadioButton SigRadioButton;
    private javax.swing.JTextField SigTextField;
    private javax.swing.JTextField SigmaTextField;
    private javax.swing.JRadioButton SummaryRadioButton;
    private javax.swing.JRadioButton UnknownRadioButton;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPanel jPanel4;
    private javax.swing.JLabel sLabel;
    private javax.swing.JTextField sTextField;
    // End of variables declaration//GEN-END:variables
    
}
