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James conducts a survey to study the relationship between cell phone use and grades earned...

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James conducts a survey to study the relationship between cell phone use and grades earned during the fall semester James suspects that there might be a lot of other factors that affect grades besides cell phones Which of the following could be a confounding variable in James s study Time spent studying O Time spent using a cell phone O Grade earned during the spring semester O Grade earned during the fall semester

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James conducts a survey to study the relationship between cell phone use and grades earned during the fall semester James suspects that there might be a lot of other factors that affect grades besides cell phones Which of the following could be a confounding variable in James s study Time spent studying O Time spent using a cell phone O Grade earned during the spring semester O Grade earned during the fall semester

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