Consider the estimated equation from Example 4.3, which can be used to study the effects o...

Consider the estimated equation from Example 4.3, which can be used to study the effects of skipping class on college GPA:

(i) Using the standard normal approximation, find the 95% confidence interval for

βhsGPA.

(ii) Can you reject the hypothesis H0: βhsGPA = .4 against the two-sided alternative at the 5% level?

(iii) Can you reject the hypothesis H0: βhsGPA = 1 against the two-sided alternative at the 5% level?