Does this diet help? A group of 75 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 was 26 pounds, with a sample standard deviation of 10 pounds. A second group of 39 people went on the diet but didn't exercise. After six months, their mean weight loss was 12 pounds, with a sample standard deviation of 7 pounds. Construct a 99.9 % confidence interval for the mean difference in weight losses. Let μ1 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. A 99.9% confidence interval for the mean difference in weight loss, in pounds, is <−μ1-μ2<
Does this diet help? A group of 75 people enrolled in a weight-loss program that involved adhering to a special diet and to a daily exercise program. After six months, their
pounds. A second group of 39 people went on the diet but didn't exercise. After six months, their mean weight loss was 12 pounds, with a sample standard deviation of 7
pounds.
Construct a 99.9 % confidence interval for the mean difference in weight losses. Let μ1
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.
A 99.9% confidence interval for the mean difference in weight loss, in pounds, is
<−μ1-μ2<
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