# Question: Refer to the data of Exercise 11 8 a Calculate a 95

Refer to the data of Exercise 11.8.

a. Calculate a 95% confidence interval for β1.

b. What is the interpretation of H0: β1 = 0 in Exercise 11.8?

c. What is the natural research hypothesis Ha for the problem in Exercise 11.8?

d. Do the data support the research hypothesis from part (c) at a = .05?

In exercise

a. Calculate a 95% confidence interval for β1.

b. What is the interpretation of H0: β1 = 0 in Exercise 11.8?

c. What is the natural research hypothesis Ha for the problem in Exercise 11.8?

d. Do the data support the research hypothesis from part (c) at a = .05?

In exercise

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