
Concept explainers
For Exercises 11 through 17, use the traditional method of hypothesis testing unless otherwise specified. Assume the assumptions have been met.
17. Diets and Exercise Programs A researcher conducted a study of two different diets and two different exercise programs. Three randomly selected subjects were assigned to each group for one month. The values indicate the amount of weight each lost.
Diet | ||
Exercise program | A | B |
I | 5, 6, 4 | 8, 10, 15 |
II | 3, 4, 8 | 12, 16, 11 |
Answer the following questions for the information in the printout shown.
a. What procedure is being used?
b. What are the names of the two variables?
c. How many levels does each variable contain?
d. What are the hypotheses for the study?
e. What are the F values for the hypotheses? State which are significant, using the P-values.
f. Based on the answers to part ε, which hypotheses can be rejected?

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Chapter 12 Solutions
Elementary Statistics: A Step By Step Approach
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