a. What evidence do you have to show that the assumption of normality is reasonable?

Explain.

b. Estimate the mean amount of weekly exercise time for all cardiovascular technicians using a point estimate and a 95% confidence interval.

c. The “Good News for Women” article in Section 9.1, “Get Enough Daily Exercise?”

says that people should exercise at least 60 minutes a week. Based on the data from the study, determine whether the technicians exercise at least 60 minutes a week. Use a 0.05 level of significance.