Are low-fat diets or low-carb diets more effective for weight loss? A sample of 77 subjects went on a low-carbohydrate diet for six months. At the end of that time the sample mean weight loss was 4.8 kg with a sample standard deviation of 7.2 kg. A second sample of 79 subjects went on a low-fat diet. Their sample mean weight loss was 2.6 kg with a standard deviation of 6.0 kg. Can you conclude that the mean weight loss on the low-carbohydrate diet is 1 kg more than that of the low-fat diet? Find the P-value and state a conclusion. Round the answer to four decimal places. The P-value is []. We [cannot] conclude that the mean weight loss on the low-carbohydrate diet is 1 kg more than that of the low-fat diet.
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State the null hypothesis (H0) and the alternative hypothesis (H1). H0: μ1 - μ2 = 0 (There is no difference in mean weight loss between low-carb and low-fat diets) H1: μ1 - μ2 ≠ 0 (There is a difference in mean weight loss between low-carb and low-fat diets) Show more…
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