Question: Using the data from Exercise 12.28, test the following at the 0.05 level. (a) H0: 1 = 0 versus H1: 1 = 0; (b) H0:

Using the data from Exercise 12.28, test the following at the 0.05 level.

(a) H0: β1 = 0 versus H1: β1 = 0;

(b) H0: β2 = 0 versus H1: β2 = 0.

(c) Do you have any reason to believe that the model in Exercise

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