A regression equation for y = hand span (cm) and x = height (inches) was discussed in Section 3.2. If the roles of the variables are reversed and only women are considered, the regression equation is
Average height = 51.1 + 0.7 (Handspan).
a. Interpret the slope of 0.7 in terms of how height changes as hand span increases.
b. What is the estimated average height of women with a hand span of 20 cm?
c. Molly has a hand span of 20 cm and is 66.5 inches tall. What is the prediction error (residual) for Molly?