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MaRussiya [10]
3 years ago
6

The regression equation below relates the scores students in an advanced statistics course received for homework completed and f

or 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 y=−84.4+0.91x . If a student had a homework score of 420 , the midterm score would be predicted to be (rounded to an integer ):a. 298b. 378c. 336d. None of the answer choices is correct
Mathematics
1 answer:
serg [7]3 years ago
7 0

Answer: d.) None of the answer choices is correct

Step-by-step explanation:

The homework score is an independent variable (known) and on the x-axis, while the midterm exam is the dependent variable, so it's on the y-axis

y = 0.91x - 94.4; and x=420

Substitute x as 420 into the equation.

y = 382.2 - 94.4 = 287.8, or approximately 288.

And this value isn't in the options above.

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