Refer to the study described in Exercise 14 11 Use the
Refer to the study described in Exercise 14.11. Use the residuals from the fitted model to answer the following questions.
a. Is there significant evidence that the residuals have a nonnormal distribution?
b. Is there significant evidence that the residuals do not have constant variances?
c. How could we assess whether or not the residuals are independently distributed?
In exercise
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