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Predict the mean grade for students who turn in papers weighing 6 ounces

Assume that the correlation is high enough to allow for reasonable prediction.

The secretary of Gamma Gamma Gamma fraternity has done some research on the grading practices of Professor Neumann's classes, he has assembled the following data: mean weight of papers = 8.3 ounces, mean grade = 76.6, r = 0.84, and b = 5.8. Predict the mean grade for students who turn in papers weighing 6 ounces.

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Suppose that the independent variable x is weight of papers in ounces and the dependent variable is y, ...

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It shows how to predict the mean grade for students who turn in papers weighing 6 ounces.

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