Refer to Exercise 15.37.
a. Does a residual analysis support the conditions necessary to conduct your tests in Exercise 15.37?
b. Conduct an analysis of the data, assuming that the normality condition does not hold, using a rank- based procedure.
c. Compare your conclusions about exercise regimens and age groups reached using the rank- based procedure to your conclusions reached using the normal- based procedures. Which set of conclusions would be more easily supported using the given data?
In exercise

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