High blood pressure is a leading cause of strokes. Medical researchers are constantly seeking ways to treat patients suffering from this condition. A specialist in hypertension claims that regular aerobic exercise can reduce high blood pressure just as successfully as drugs, with none of the adverse side effects. To test the claim, 50 patients who suffer from high blood pressure were chosen to participate in an experiment. For 60 days, half the sample exercised three times per week for one hour; the other half took the standard medication. The percentage reduction in blood pressure was

recorded for each individual. Using the following EXCEL output, can we conclude at the 1% significance level that exercise is more effective than medication in reducing hypertension (assuming unequal population variances)? Why would this information be useful?

t-Test: Two-Sample Assuming Unequal Variances Exercise Drug Mean 14.02 11.83 Variance 17.81 11.85 Observations 25 25 Hypothesized Mean Difference 0 df 46 t Stat 2.0087 P(T