question archive When 40 people used Weight Watchers for one year, their mean weight loss was 3
When 40 people used Weight Watchers for one year, their mean weight loss was 3
Subject:StatisticsPrice: Bought3
When 40 people used Weight Watchers for one year, their mean weight loss was 3.0 lbs and their standard deviation was 4.9 lbs. Use a 0.01 level of significance to test the claim that the mean weight loss is greater than 0 lbs. Based on your results, does the diet appear to be effective? Does it have practical significance?
