16

a. What other nonparametric test could you have used to analyze the data presented in Problem 15?

b. Use this test to analyze the data. What do you conclude with   0.051 tail?

c. Explain the difference between your conclusions for Problems 16b and 15c.

d. Let P equal the probability for each subject that diet plus exercise will yield greater weight loss. If Preal  0.75, using the sign test with   0.051 tail, what is the power of the experiment to detect this level of effect? What is the probability of making a Type II error? health