Hypothesis test for a population proportion in Exercise 9.72 on page 375:
• Select Stat: Basic Statistics : 1 Proportion
• In the “1 Proportion (Test and Confidence Interval)” dialog box, select the “Summarized data” option.
• Enter the sample number of successes (here equal to 146) into the “Number of events” window.
• Enter the sample size (here equal to 400) into the “Number of trials” window.
• Place a checkmark in the “Perform hypothesis test” checkbox.
• Enter the hypothesized proportion (here equal to 0.25) into the “Hypothesized proportion” window.
• Click on the Options… button.
• In the “1 Proportion—Options” dialog box, select the desired alternative (in this case “greater than”) from the Alternative drop-down menu.
• Place a checkmark in the “Use test and interval based on normal distribution” checkbox.
• Click OK in the “1 Proportion—Options” dialog box and click OK in the “1 Proportion (Test and Confidence Interval)” dialog box.
• The hypothesis test results are given in the Session window.
Appendix 9.2: One-Sample Hypothesis Testing Using Excel
The instruction block in this section begins by describing the entry of data into an Excel spreadsheet. Alternatively, the data may be loaded directly from the data disk included with the text. The appropriate data file name is given at the top of the instruction block. Please refer to Appendix 1.2 for further information about entering data, saving data, and printing results.