Researchers randomly assigned 107 young over weight women to cut 25% of their calories in one of two ways: The continuous group ate about 1500 calories a day every day while the intermittent group ate about 500 calories a day for two days a week and their typical diets the rest of the week. (Interestingly, the women who cut calories on two days a week did not overeat on the other days.) The summary statistics for weight loss (in pounds) after 6 months are shown in Table 6.21. Test to see if there is any difference in mean weight loss results between the two methods. Show all details of the test.

Table 6.21

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Method п х Continuous Intermittent 13.2 54 53 14.1 12.2 10.6