Also what would the upper bound?

A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of Two sample T for Men vs Women V women. She randomly selected 51 men and 70 women to participate in the study. Each subject was required to step Mean StDev SE Mean up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Men 112.3 11.4 Women 118.1 14.6 99% Cl for mu Men - mu Women (-12.06, 0.46) T-Test mu Men = mu Women (vs