Question: A college professor has collected data for a random sample of 43 of her students. She has their final semester average marks, and the total

A college professor has collected data for a random sample of 43 of her students. She has their final semester average marks, and the total number of hours each spent working during the semester. The professor has hired one of her students to help her analyze the data, and the student has estimated the regression equation to be y = 0.1535x + 90.241. Why is the professor sure that the student has made a mistake?

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