a recent study released by the government examined geographic patterns among energy use in the u.s. according to the study's results, monthly energy bills for homeowners in the eastern part of the country are higher on average than those for homeowners residing in the western u.s. based on this finding, the study's authors concluded that homeowners in the eastern part of the country use more energy than those in the west. which of the following is an important assumption for the conclusion above to be true?
