management of geriatric patients who were transferred from the emergency room to the geriatric ward. The two methods were "usual care" and "geriatric team care." The assignment of patients to the two groups was done at random; 36 were assigned to the "usual care" group (control group, C) and 41 to the "geriatric team care" group (treatment group, T). The researcher is interested in carrying out a hypothesis test to see if the average hospitalization cost for the "geriatric team care" is less than that for the "usual care" at the significance level of 0.02. The sample mean