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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Low carbohydrate diet In a recent study, 10 272 moderately obese subjects were randomly assigned to one of three diets: low-fat, restricted-calorie; Mediterranean, restrictedcalorie; or low-carbohydrate, non-restricted- calorie. The prediction was that subjects on a low- carbohydrate diet would lose weight, on the average. After two years, the mean weight loss was 5.5 kg for the 109 subjects in the lowcarbohydrate group with a standard deviation of 7.0kg. The MINITAB output shows results of a significance test for testing H0: μ = 0 against Ha: μ ≠0, where μ is the population mean weight change. Note that weight change is determined by calculating after weight - before weight.
a. Identify the P-value for this test.
b. How is the P-value interpreted?
c. Would the P-value and 95% confidence interval lead to the same conclusion about H0? Explain.
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