MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia in older subjects. Before treatment with zopiclone, 16 subjects had a
- State the null hypothesis (H0).
- State the alternative hypothesis (H1).
- What kind of test would this be, a two-tailed, a left-tailed, or a right-tailed?
- Sketch a normal distribution curve and highlight the region of significance (also called critical region or rejection region).
- What test statistic is most relevant to this test? Why?\
- Use Excel to determine the P-value. What is it?
- On your graph, next highlight the P-value.
- State a conclusion about the null hypothesis. (Reject H0 or fail to reject H0.)
Next, test this hypothesis using the critical value method. - Using the most relevant test statistic, find the critical value from the tables at the back of the textbook. What is it?
- Sketch a normal distribution curve, plot the critical value, and highlight the critical or rejection region.
- Using the formulas in section 8-3, calculate the test statistic based on the sample data. Show your work. What is the test statistic?
- On your graph, plot the test statistic.
- State a conclusion about the null hypothesis. (Reject H0 or fail to reject H0.)
- Does zopiclone appear to be effective? Why do you think so?
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