Question: A professor wonders whether a student's homework average (X) could be used to predict their final grade in the course (Y). She calculates a least-squares

A professor wonders whether a student's homework average (X) could be used to predict their final grade in the course (Y). She calculates a least-squares regression line, based on data from randomly selected students, and gets Y = 21.839 + 0.724 X. Please use this information to answer Questions

hypothesis to use for resolving this question?

12

d0

10

p 1 p 2

At least one of the means is different from at least one of the others.

A student's final course grade is not independent of their homework average.

A student's final course grade is independent of their homework average.

Predict a student's course grade, if their homework average is 85 pts

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