The mean brain volume for the group of healthy adults is gathered and the mean brain volume of adults diagnosed with obsessive-compulsive behavior is as well obtained. The results are listed below. Test the claim that there is difference between the two population means. Employ a 0.01 significance level.
Control Group: n = 10 xbar = 0.45 s = 0.08
Obsessive-compulsive patients: n = 10 xbar = 0.34 s = 0.08