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)$r = \pm 0.514$
B) $r = \pm 0.532$
C) $r = \pm 0.641$
D) r=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)$r = \pm 0.514$
B) $r = \pm 0.532$
C) $r = \pm 0.641$
D)  r=0.514

Quizplus · Accepted Answer

The critical value of $r$ for a two-tailed test with $n=15$ and $\alpha = 0.05$ can be found in a table of critical values for Pearson's correlation coefficient. For these parameters, the critical value is indeed $\pm 0.514$.

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 $\alpha = 0.05$