In addition to the regression line, the report on the Mumbai measurements says that r2 = 0.95. This suggests that

a. Although arm span and height are correlated, arm span does not predict height very accurately.

b. Height increases by √0.95 = 0.97 cm for each additional centimeter of arm span.

c. 95% of the relationship between height and arm span is accounted for by the regression line.

d. 95% of the variation in height is accounted for by the regression line with x = arm span.

e. 95% of the height measurements are accounted for by the regression line with x = arm span.

Measurements on young children in Mumbai, India, found this least squares line for predicting y = height (in cm) from x = arm span (in cm):

ŷ = 6.4 + 0.93x

Select the best answer.