According to the regression equation, what is the expected test score if three hours are spent studying?
A) about 63
B) about 65
C) about 67
D) about 70

Question

Quizplus · Accepted Answer

According to the regression equation, the expected test score can be found by plugging in the value of 3 for x:
y = 58 + 2x
y = 58 + 2(3)
y = 58 + 6
y = 64
Therefore, the expected test score if three hours are spent studying is about 64, which is closest to answer choice B (about 65).

According to the Regression Equation, What Is the Expected Test