7. Upon completion of 78 hours of college course, Ned's GPA is 2.5. Assuming that
he plans to take 42 more hours of courses, what does his GPA need to be during
the remaining hours in order to have an overall GPA of 3.0?

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=0.105, n=15 a: critical values: r= +0.514, no significant linear correlations b: critical values: r= +0.514, significant linear correlation c: critical values: r= +0.532, no significant linear correlation d: critical values: r= 0.514, no significant linear correlation will mark brainliest !