A student at a junior college conducted a survey of 20 randomly selected? full-t

Question

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

ModifyingAbove y with caret equals negative 0.0502 x plus 2.9403y=?0.0502x+2.9403.

?(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.)

Explanation / Answer

Ans:

Given that

Regression equation:

y'=-0.0502x+2.9403

when x=8

y'=-0.0502*8+2.9403

y=2.54

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