For Exercises 23–30, follow these steps. Assume that the regression model assumptions are valid.

  1. Find for a 95% confidence interval for .
  2. Find the margin of error .
  3. Construct a 95% confidence interval for .

Question 13.25

25. Data in Exercise 9

13.1.25

(a) (b) (c) (1.4544, 6.5456)