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11.A psychologist studies the effects of exam review strategy on long-term memory.College students are randomly selected and then randomly assigned to one of fourgroups.Group1studiesusingvisualinformationonly.Group2studiesusingauditoryinformationonly.Group3studiesusingvisualandauditoryinformation.Group 4 does not study at all.The students follow the instructions for how they must study for four days to prepare fora 100-question multiple-choice test. They all read the same chapter in the textbook and alltake the same exam. Exam scores are then recorded.Identify the different levels of the independent variable.-Exam scores: The exam scores are thedependent measure.-the 100-question multiple-choice test:all
