A physical therapist wanted to know whether the mean step Two sample T for Men vs Women pulse of men was less than the mean step pulse of women. She N Mean StDev SE Mean randomly selected 50 men and 80 women to participate in the Men 50 112.2 11.2 1.6 study. Each subject was required to step up and down a 6-inch Women 80 118.4 14.8 1.7 platform. The pulse of each subject was then recorded. The 98% CI for mu Men - mu Women following results were obtained. (-11.64, - 0.76) T-Test mu Men = mu Women (vs H2 OC. Ho: H1 = H2; Ha: H1 CH2