Question: 18.2 You are analyzing a linear regression model with 500 observations and one regressor. Explain how you would construct a confidence interval for b1 if:

18.2 You are analyzing a linear regression model with 500 observations and one regressor. Explain how you would construct a confidence interval for b1 if:

a. Assumptions #1 through #4 in Key Concept 18.1 are true, but you think Assumption #5 or #6 might not be true.

b. Assumptions #1 through #5 are true, but you think Assumption #6 might not be true. (Give two ways to construct the confidence interval.)

c. Assumptions #1 through #6 are true.

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