For Exercises 9–14, use the data from the indicated exercise to construct a 95% prediction interval for a randomly chosen value of for the given value of . Assume the regression assumptions are met.

Question 13.87

9. The data in Exercise 3

13.2.9

Lower bound: 15.4886 (Minitab: 15.4878); Upper bound: 26.5114 (Minitab: 26.5122)