For Exercises 13–24, do the following:

  1. Calculate the slope and the intercept of the regression line. Write the regression equation.
  2. Interpret the values for and .

Question 4.119

21. The heights (in inches) and weights (in pounds) of a sample of five women are recorded.

66 122
67 133
69 153
68 138
65 125

4.2.21

(a) (b) For each increase of 1 inch, the estimated weight increases by 7.2 pounds. When inches, the estimated weight is −348.2 pounds.