For Exercises 15–18, follow these steps. Assume that the regression model assumptions are valid.

  1. Find for a two-tailed test with level of significance and .
  2. Calculate .
  3. Compute .
  4. Calculate .
  5. Perform the hypothesis test for the linear relationship between and , using the critical-value method and .

Question 13.16

16. Data in Exercise 8, where