Nine Pairs of Data Yield $\mathrm { r } = 0.867$

Multiple Choice

Nine pairs of data yield $\mathrm { r } = 0.867$ and the regression equation $\hat { y } = 19.4 + 0.93 \mathrm { x }$ . Also, $\overline { \mathrm { y } } = 64.7$ . What is the best predicted value of $y$ for $x = 48$ ?

A) 79.6
B) 64.7
C) 57.8
D) 64