Question 4.119

For Exercises 13–24, do the following:

Calculate the slope $b_{1}$ and the $y$ intercept $b_{0}$ of the regression line. Write the regression equation.
Interpret the values for $b_{1}$ and $b_{0}$ .

Question 4.119

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

$x = height$	$y = weight$
66	122
67	133
69	153
68	138
65	125

4.2.21

(a) $b_{1} = 7.2, b_{0} = - 348.2, \hat{y} = 7.2 x - 348.2$ (b) For each increase of 1 inch, the estimated weight increases by 7.2 pounds. When $x = 0$ inches, the estimated weight is −348.2 pounds.