The article “The Effects of a Low-Fat, Plant-Based Dietary Intervention on Body Weight, Metabolism, and Insulin Sensitivity in Postmenopausal Women” (Amer. J. of Med., 2005: 991–997) reported on the results of an experiment in which half of the individuals in a group of 64 postmenopausal overweight women were randomly assigned to a particular vegan diet, and the other half received a diet based on National Cholesterol Education Program guidelines. The sample mean decrease in body weight for those on the vegan diet was 5.8 kg, and the sample SD was 3.2, whereas for those on the control diet, the sample mean weight loss and standard deviation were 3.8 and 2.8, respectively. Does it appear the true average weight loss for the vegan diet exceeds that for the control diet by more than 1 kg? Carry out an appropriate test of hypotheses at significance level .05 based on calculating a P-value
The article “The Effects of a Low-Fat, Plant-Based Dietary
Intervention on Body Weight, Metabolism, and Insulin
Sensitivity in Postmenopausal Women” (Amer. J. of Med.,
2005: 991–997) reported on the results of an experiment in
which half of the individuals in a group of 64 postmenopausal
overweight women were randomly assigned to a particular
vegan diet, and the other half received a diet based on National
Cholesterol Education Program guidelines. The sample mean
decrease in body weight for those on the vegan diet was 5.8
kg, and the sample SD was 3.2, whereas for those on the control diet, the sample mean weight loss and standard deviation
were 3.8 and 2.8, respectively. Does it appear the true average
weight loss for the vegan diet exceeds that for the control diet
by more than 1 kg? Carry out an appropriate test of hypotheses at significance level .05 based on calculating a P-value
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