# Question: Refer to Exercise 13 25 The data on ages in years

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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