Low-fat or low-carb? Are low-fat diets or low-carb diets more effective for weight loss? A sample of 41 subjects went on a low-carbohydrate diet for six OO months. At the end of that time, the sample mean weight loss was 4.6 kilograms with a sample standard deviation of 6.28 kilograms. A second sample of 49 subjects went on a low-fat diet. Their sample mean weight loss was 2.3 kilograms with a standard deviation of 4.66 kilograms. Can you conclude that the mean weight loss differs between the two diets? Let u, denote the mean weight loss on the low-carb diet and u, denote the mean weight loss on the low-fat diet. Use the a = 0.1 level and the critical value method