Reference no: EM132339504

Question

In a? study, 272 moderately obese subjects were randomly assigned to one of three? diets: low-fat,? restricted-calorie; Mediterranean,? restricted-calorie; or?low-carbohydrate, nonrestricted-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? low-carbohydrate group with a standard deviation of 7.0 kg. The technology output below shows results of a significance test for testing H₀: μ=0 against H_a: μ≠0?,where μ is the population mean weight change. Note that weight change is determined by calculating after weight-before weight

N 109; Mean -5.500; STDev 7.000; SE Mean 0.670; 95% CI -6.829, -4.171; T -8.20; P 0.000

a) Identify the P value

b)Would the? P-value and? 95% confidence interval lead to the same conclusion about H₀? The? 95% confidence interval is ? and ? Which (contains or does not contain?) the hypothesized value for the mean so it (does or does not?) reject H₀ The P value is (greater or less than?) a significance value of 0.05 so it (rejects or does not reject?) H₀. So the P value and 95% confidence interval (lead or do not lead?) to the same conclusion about H₀.