An anthropologist is interested in the relationship between fathers’ and sons’ heights. She collects a simple random sample of 25 fathers and 25 sons and determines that the least-squares regression line is hat y is equal to negative 2 point 8 plus 1 point 1 x , where start set hat y end set is the predicted height of each son and x is the height of his father (both measured in inches). One father is 70 inches tall and the residual for his son’s height is 2 point 5 What is the son’s actual height?