Are lowfat diets or lowcarb diets more effective for weight

Are low?fat diets or low?carb diets more effective for weight loss? This question was addressed in a weight loss study. A sample of 79 subjects went on a low?carbohydrate diet for six months. At the end of that time the sample mean weight loss was 4.7 kg with a sample standard deviation of 7.4 kg. A second sample of 81 subjects went on a low?fat diet. Their sample mean weight loss was 2.6 kg with a standard deviation of 5.9 kg. Can you conclude that the mean weight loss is greater for those on the low?carbohydrate diet? Since the P?value is , we (select) . conclude that the mean weight loss is greater for those on the low?carbohydrate diet.

Solution

p value is 0.0247. we can conclude...