Suppose You Will Perform a Test to Determine Whether There $\alpha$

Suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear
correlation between two variables. Find the critical values of r given the number of pairs of data n and the significance
level $\alpha$
-Nine pairs of data yield $\mathrm { r } = 0.867$ and the regression equation $\hat { \mathrm { y } } = 19.4 + 0.93 \mathrm { x } .$ Also, $\overline { \mathrm { y } } = 64.7$ . What is the best predicted value of $y$ for $x = 44$ ?

A) $60.3$
B) $79.6$
C) $57.8$
D) $64.7$