The following Minitab display gives information regarding the relationship between the body weight of a child (in kilograms) and the metabolic rate of the child (in 100 kcal/ 24 hr).
Predictor Coef SE Coef T P
Constant 0.8624 0.4148 2.06 0.84
Weight 0.40727 0.02978 13.52 0.000
S = 0.517508 R-Sq = 96.0%
(a) Write out the least-squares equation.
y hat =
+
x

(b) For each 1 kilogram increase in weight, how much does the metabolic rate of a child increase? (Use 5 decimal places.)


(c) What is the value of the correlation coefficient r? (Use 3 decimal places.)