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

Multiple Choice

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 $\alpha$
-Eight pairs of data yield $\mathrm { r } = 0.742$ and the regression equation $\hat { y } = 55.8 + 2.79 x .$ Also, $\bar { y } = 71.125$ . What is the best predicted value of $y$ for $x = 8$ ?

A) $78.12$
B) $449.19$
C) $57.80$
D) $71.13$