# Question

Refer to Exercise 13.25. The data on ages (in years) and prices (in hundreds of dollars) for eight cars of a specific model are reproduced from that exercise.

a. Construct a 95% confidence interval for B. You can use results obtained in Exercises 13.25 and 13.40 here.

b. Test at the 5% significance level whether B is negative.

a. Construct a 95% confidence interval for B. You can use results obtained in Exercises 13.25 and 13.40 here.

b. Test at the 5% significance level whether B is negative.

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