# 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.

## Answer to relevant Questions

The data given in the table below are the midterm scores in a course for a sample of 10 students and the scores of student evaluations of the instructor. (In the instructor evaluation scores, 1 is the lowest and 4 is the ...The following table, reproduced from Exercise 13.38, gives information on the calorie count and grams of fat for the 11 types of bagels produced by Panera Bread. A sample data set produced the following information. n = 10, ∑x = 100, ∑y = 220, ∑xy = 3680 ∑x2 = 1140, and ∑y2 = 25,272 a. Calculate the linear correlation coefficient r. b. Using a 2% significance level, can you ...Refer to data given in Exercise 13.29 on the total 2011 payroll and the percentage of games won during the 2011 season by each of the National League baseball teams. Compute the linear correlation coefficient, p. Does it ...Construct a 99% confidence interval for the mean value of y and a 99% prediction interval for the predicted value of y for the following. a. ŷ = 3.25 + .80x for x = 15 given se = .954, = 18.52, SSxx = 144.65, and n = 10 b. ...Post your question