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A student at a junior college conducted a survey of 20 randomly selected full-time students to...

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 y = -0.0516x + 2.9389

(a) Predict the grade-point average of a student who plays video games 8 hours per week.

The predicted grade-point average is

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Answer #1

y = -0.0516x + 2.9389

where,

y = grade-point average

x = number of hours of video game playing each week

(a) Predict the grade-point average of a student who plays video games 8 hours per week.

- Thus, x = 8

y = -0.0516*8 + 2.9389

y = 2.5261

Thus,

the predicted grade-point average of a student who plays video games 8 hours per week is 2.5261

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