Question 6.75

6.75 Exercise and statistics exams.

A study examined whether exercise affects how students perform on their final exam in statistics. The -value was given as 0.68.

  1. State null and alternative hypotheses that could be used for this study. (Note that there is more than one correct answer.)
  2. Do you reject the null hypothesis? State your conclusion in plain language.
  3. What other facts about the study would you like to know for a proper interpretation of the results?

6.75

(a) Answers will vary. (b) Do not reject the null hypothesis. There is no evidence that exercise affects how students perform on their final exam in statistics. (c) How did they measure exercise—was it observational or experimental, how did they get the sample, etc.