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A researcher hypothesized that decreasing amount of sleep is associated with a higher test score in college students. In other words, the researcher hypothesized that,

A researcher hypothesized that decreasing amount of sleep is associated with a higher test score in college students. In other words, the researcher hypothesized that, for college students, the amount of sleep and grade has a(n) _______ (positive, negative, no, unknown) correlation.

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