A least squares regression line was fitted to the weights (in pounds) versus age (in months) of a group of many young children. The equation of the line is
y hat=16.6+.65t
Where y hat is the predicted weight and t is the age of the child. A 20-month-old child in this group has an actual weight of 25 pounds. Which of the following is the residual weight, in pounds, for this child?
A. -7.85
B. -4.60
C. 4.60
D. 5.00
E. 7.85