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  4.7  kilograms with a sample standard deviation of  7.16  kilograms. A second sample of  79  subjects went on a low-fat diet. Their sample mean weight loss was  2.6  kilograms with a standard deviation of  5.90  kilograms. Can you conclude that the mean weight loss differs between the two diets? Let  μ1  denote the mean weight lost on the low-carb diet and  μ2  denote the mean weight lost on the low-fat diet. Use the  a=0.01  level and the TI-84 Plus calculato

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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 

4.7

 kilograms with a sample standard deviation of 

7.16

 kilograms. A second sample of 

79

 subjects went on a low-fat diet. Their sample mean weight loss was 

2.6

 kilograms with a standard deviation of 

5.90

 kilograms. Can you conclude that the mean weight loss differs between the two diets? Let 

μ1

 denote the mean weight lost on the low-carb diet and 

μ2

 denote the mean weight lost on the low-fat diet. Use the 

a=0.01

 level and the TI-84 Plus calculator.

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