Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05.

r = 0.543, n = 25

Select one:

a. Critical values: r = 0.396, significant linear correlation b. Critical values: r = 0.396, no significant linear correlation c. Critical values: r = 0.487, no significant linear correlation d. Critical values: r = 0.487, significant linear correlation