5. A researcher wishes to see if there is a difference in the cholesterol levels of two groups of men. A random sample of 60 men between the ages of 25 and 40 is selected and tested. The average level is 215. A second sample of 45 men between the ages of 41 and 56 is selected and tested. The average of this group is 235. The sample standard deviation for both groups is 4.1. At=.01

=.01, is there a difference in the cholesterol levels between the two groups?