Question

Low-fat or low-carb? Are low-fat diets or low-carb diets more effective for weight loss? A sample of 82 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 3.2 kilograms with a sample standard deviation of 7.24 kilograms. A second sample of 84 subjects went on a low-fat diet. Their sample mean weight loss was 5.0 kilograms with a standard deviation of 7.62 kilograms. Can you conclude that the mean weight loss of subjects having low-carb diets is less than the mean weight loss of subjects having low-fat diets? Let ?1 denote the mean weight lost on the low-carb diet and ?2 denote the mean weight lost on the low-fat diet. Use the ?=0.1 level and the TI-84 Plus calculator. State the appropriate null and alternate hypotheses. H0 : ?1 = ?2 H1 : ?1 < ?2 This hypothesis test is a left-tailed test. Compute the P-value. Round the answer to four decimal places. P =

          Low-fat or low-carb? Are low-fat diets or low-carb diets more effective for weight loss? A sample of 82 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 3.2 kilograms with a sample standard deviation of 7.24 kilograms. A second sample of 84 subjects went on a low-fat diet. Their sample mean weight loss was 5.0 kilograms with a standard deviation of 7.62 kilograms. Can you conclude that the mean weight loss of subjects having low-carb diets is less than the mean weight loss of subjects having low-fat diets? Let ?1 denote the mean weight lost on the low-carb diet and ?2 denote the mean weight lost on the low-fat diet. Use the ?=0.1 level and the TI-84 Plus calculator.

State the appropriate null and alternate hypotheses.
H0 : ?1 = ?2
H1 : ?1 < ?2
This hypothesis test is a left-tailed test.

Compute the P-value. Round the answer to four decimal places. P =

Low-fat or low-carb? Are low-fat diets or low-carb diets more effective for weight loss? A sample of 82 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 3.2 kilograms with a sample standard deviation of 7.24 kilograms. A second sample of 84 subjects went on a low-fat diet. Their sample mean weight loss was 5.0 kilograms with a standard deviation of 7.62 kilograms. Can you conclude that the mean weight loss of subjects having low-carb diets is less than the mean weight loss of subjects having low-fat diets? Let ?1 denote the mean weight lost on the low-carb diet and ?2 denote the mean weight lost on the low-fat diet. Use the ?=0.1 level and the TI-84 Plus calculator.

State the appropriate null and alternate hypotheses.
H0 : ?1 = ?2
H1 : ?1 < ?2
This hypothesis test is a left-tailed test.

Compute the P-value. Round the answer to four decimal places. P =

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