5.22 Because elderly people may have difficulty standirig to have their heights measured, a study looked at predicting over all height from height to the knee. Here are data (in centimetets)

for five elderly men:

Knee height x Height y 57.7 192.1 47.4 153.3 43.5 146.4 44.8 162.7 55.2 169.1 Use your calculator or software: what is the equation of the least-squares regression line for predicting height from knee height?

(a) y = 2.4 4- 44.Ix

(b) y = 44.1 4- 2.4x

(c) y = -2.5 4-0.32x