In exercise 18, the data on grade point average x and monthly salary y provided the estimated regression equation XXXXXXXXXX x . a. Develop a 95% confidence interval estimate of the mean starting...

In exercise 18, the data on grade point averagexand monthly salaryyprovided the estimated regression equation 1790.5 + 581.1x.

a. Develop a 95% confidence interval estimate of the mean starting salary for all students with a 3.0 GPA.

b. Develop a 95% prediction interval estimate of the starting salary for Joe Heller, a student with a GPA of 3.0.