6 points Exercise Medical researchers conducted a study to determine whether treadmill exercise could improve the walking ability of patients suffering from claudication which is pain caused by insufficient blood flow to the muscles of the legs A sample of 47 patients walked on a treadmill for six minutes every day After six months the mean distance walked in six minutes was 341 meters with a standard deviation of 79 meters For a control group of 39 patients who did not walk on a treadmill the mean distance was 305 meters with a standard deviation of 82 meters Can you conclude that the mean distance walked for patients using a treadmill differs from the mean for the controls Let u denote the mea distance walked for patients who used a treadmill Use the 0 05 level of significance and the TI 84 Plus calculator