Question

Homework: Section 4.2

icore: 0 of 1 pt
3 of 6 (2 complete)
HW Score: 16.67%, 1 of
1.2.13
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A student at a junior college conducted a survey of 20 randomly selected full-time students to determine the relation between the number of hours of video game
playing each week, x, and grade point average, y. She found that a linear relation exists between the two variables. The least squares regression line that describes
this relation is ý = -0.0546x +2.9332
(a) Predict the grade-point average of a student who plays video games 8 hours per week.
The predicted grade-point average is:
(Round to the nearest hundredth as needed.)

Answer 1

2.50

Explanation:

X = the number of hours per week

If the student plays 8 hours per week, replace the x in y = -0.0546x +2.9332 to find the answer.

-0.0546(8) = -0.4368

The add 2.9332

-0.4368 + 2.9332 = 2.4964

2.4964 rounded to the nearest hundredths place is 2.50 or 2.5