Concept explainers
No-Carb Diet A weight-loss diet claims that it causes weight loss by eliminating carbohydrates (breads and starches) from the diet. To test this claim, researchers randomly assign over-weight subjects to two groups. Both groups eat the same amount of calories, but one group eats almost no carbs, and the other group includes carbs in their meals. After 2 months, the researchers test the claim that the no-carb diet is better than the usual diet. They record the proportion of each group that lost more than
a. There were no significant differences in effectiveness between the no-carb diet and the carb diet.
b. The no-carb diet and the carb diet were equally effective.
c. The researchers did not see enough evidence to conclude that the no-carb diet was more effective.
d. The no-carb diet was less effective than the carb diet.
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