Question: Consider again the regression on the Census data presented in section 7.6. (a) Use the information in exercise 7.14 and equation (7.7) to calculate SD(a).

Consider again the regression on the Census data presented in section 7.6.

(a) Use the information in exercise 7.14 and equation (7.7) to calculate SD(a).

(b) Use the answer to part a to construct the 99% confidence interval for the constant α in the underlying population relationship.

(c) Test the null hypothesis H0 : α0 = 0 against the alternative hypothesis H1 :

α1 > 0.

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