Mathematics, 12.11.2020 04:20 emmaty6821
A researcher would like to study the relationship between average fuel economy (measured in miles per gallon) and fuel type (premium, regular unleaded, and E85). He randomly selects 90 vehicles of various makes and models, including compact cars, full-size cars, and trucks. All of the selected vehicles have been driven less than 6,000 miles before the experiment Does this experiment have a control group?
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A researcher would like to study the relationship between average fuel economy (measured in miles pe...
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