Question: Does this diet help? A group of75 people enrolled in a weight-loss program that involved adhering to a special diet and to a daily exercise

Does this diet help?A group of75 people enrolled in a weight-loss program that involved adhering to a special diet and to a daily exercise program. After six months, their mean weight loss was26pounds, with a sample standard deviation of10

pounds. A second group of39 people went on the diet but didn't exercise. After six months, their mean weight loss was12 pounds, with a sample standard deviation of7

pounds.

Construct a99.9 % confidence interval for the mean difference in weight losses. Let1

denote the mean weight loss of the group with daily exercise. Use the TI-84 Plus calculator and round the answers to the nearest integer.

A99.9% confidence interval for the mean difference in weight loss, in pounds, is

<1-2<

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