For Exercises 7–9, do the following, for the indicated data:

  1. Find the point estimate of , for the given .
  2. Calculate and interpret a 95% confidence interval for the mean value of for the given .
  3. Compute and interpret a 95% prediction interval for a randomly chosen value of for the given .

Question 13.152

8. Data in Exercise 2, for a high school GPA of 3.0