(Table: Diets) An article in the journal Applied Nutritional Investigation reported the results of comparison of two different weight-loss programs (Liao, 2007). In the study, obese participants were randomly assigned to one of two groups: (1) the soy group, a low-calorie group that ate only soy-based proteins or (2) the traditional group, a low-caloric group that received two thirds of their protein from animal products and one third from plant products. One of the dependent measures collected was the amount of body fat loss as a percentage of initial body weight. Fictional data on the percent of body fat loss appear in the table. These data produce results similar to those of the 2007 study (note that a smaller than that used in the study is presented for case of calculation ). Perform all six steps of the appropriate hypothesis test on this set of data.

Soy Diet Traditional Diet

2.5 1.21

1.7 0.86

2.5 1.78

1.9 1.23

2.0 0.50

3.2 1.76