The regression equation below relates the scores students in an advanced statist
ID: 3023211 • Letter: T
Question
The regression equation below relates the scores students in an advanced statistics course received for homework completed and the subsequent midterm exam. Homework scores are based on assignments that preceded the exam. The maximum homework score a student could obtain was 500 and the maximum midterm score was 350. The regression line that was obtained is given by
If a student had a homework score of 420, the midterm score would be predicted to be (rounded to an integer):
None of the answer choices is correct. 378. 298. 336.Explanation / Answer
As
y^ = -84.4 + 0.91x
Then if x = 420, then
y^ = -84.4 + 0.91*420 = 297.8 or 298 [ANSWER, C]