Chapter 4, Problem 73SE

Test Scores Assume that in a political science class, the teacher gives a midterm exam and a final exam. Assume that the association between midterm and final scores is linear. The summary statistics have been simplified for clarity see Guidance on page 209.

Midterm: Mean $=75$, Standard deviation $=10$

Final: Mean $=75$, Standard deviation $=10$

Also, $r=0.7$ and $n=20$.

According to the regression equation, for a student who gets a 95 on the midterm, what is the predicted final exam grade? What phenomenon from the chapter does this demonstrate? Explain. See page 209 for guidance.