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 value(s) of r given that n = 15 and $\alpha = 0.05$
A) $r = \pm 0.641$
B) $r = \pm 0.532$
C) $r = 0.514$
D) $r = \pm 0.514$

Question

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 value(s) of r given that n = 15 and $\alpha = 0.05$ 
A) $r = \pm 0.641$
B) $r = \pm 0.532$
C) $r = 0.514$
D) $r = \pm 0.514$

Quizplus · Accepted Answer

The critical value of r with n = 15 and α = 0.05 is found using a table or a calculator. Using a table, we find that the critical values of r are ±0.514. Therefore, the best choice is D.

Suppose You Will Perform a Test to Determine Whether There α=0.05\alpha = 0.05α=0.05

Suppose You Will Perform a Test to Determine Whether There $\alpha = 0.05$