Dan Stout, a researcher at the Wisconsin Department of Public Health, has begun work on a study examining body mass index (BMI) values for Wisconsin residents. Mr. Stout is particularly interested in BMI variations across the state’s two largest cities: Milwaukee and Madison. Mr. Stout believes that citizens in Madison are more physically fi t and should thus have lower average BMI scores than citizens in Milwaukee. As a trial run before conducting the larger study, Mr. Stout has obtained two random samples of BMI data for 120 residents in each city (Milwaukee = BMIMIL, Madison = BMIMAD). What can Mr. Stout conclude from these data?