Question: Larricks conducts a study in which he compares the effects of rock music, classical music, rap music, and folk music on academic performance. In this

Larricks conducts a study in which he compares the effects of rock music, classical music, rap music, and folk music on academic performance. In this study, the independent variable is _________ and it has ____ level(s). Group of answer choices effectiveness of music; one type of music; four type of music; one effectiveness of music; four

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