The Kamloops Weight Clinic claims that everyone can lose weight after two weeks in its program. The following table lists the weights, in kilograms, of randomly selected clients before and after the program. Use the indicated test with a 0.05 level of significance to test the hypothesis that the program has no effect on people's weight.
a. Sign test
b. Wilcoxon signed-ranks test
c. t test for a claim about two dependent samples (Section 8-2)
d. How do the preceding results support the statement that nonparametric tests lack the sensitivity of parametric tests (so stronger evidence is required before a null hypothesis is rejected)?

Transcribed Image Text:

Client Weight before 75 81 77 87 85 74 77 104 95 100 entering program Weight after entering program CDEFGHỊ 70 82 77 85 80 75 79 100 84 93