The article “Treadmill Exercise and Resistance Training in Patients With Peripheral Arterial Disease With and Without Intermittent Claudication. A Randomized Controlled Trial” (M. McDermott, P. Ades, et al., Journal of the American Medical Association, 2009:165–174) reported the results of 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 48 patients walked on a treadmill for six minutes every day. After six months, the mean distance walked in six minutes was 348 m, with a standard deviation of 80 m. For a control group of 46 patients who did not walk on a treadmill, the mean distance was 309 m with a standard deviation of 89 m. Find a 95% confidence interval for the difference in mean distance walked between the two groups of patients.
The article “Treadmill Exercise and Resistance Training in Patients With Peripheral Arterial
Disease With and Without Intermittent Claudication. A Randomized Controlled Trial” (M.
McDermott, P. Ades, et al., Journal of the American Medical Association, 2009:165–174)
reported the results of 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 48 patients walked on a treadmill for six
minutes every day. After six months, the
with a standard deviation of 80 m. For a control group of 46 patients who did not walk on a
treadmill, the mean distance was 309 m with a standard deviation of 89 m. Find a 95%
confidence interval for the difference in mean distance walked between the two groups of
patients.
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