Question: Using the data from Exercise 12.28, test the following at the 0.05 level. 1. H : = 0 versus H : 0;

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

1. H : β = 0 versus H : β ≠ 0;

2. H : β = 0 versus H : β ≠ 0.

3. Do you have any reason to believe that the model in Exercise 12.28 should be changed? Why or why not?

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