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A professor believes that the midterm score in her class is a good prediction of the...

A professor believes that the midterm score in her class is a good prediction of the final exam score. If the mean for the midterm ( M x) was 77, with s x = 18.5, and the mean for the final exam ( M y) was 84, with s y = 14, what final exam score would be predicted for someone whose midterm was 77?

77

84

91

cannot be answered without knowing Pearson’s r
math   Statistics-And-Probability   
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