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 0.0548x + 2.9361y=?0.0548x+2.9361.

?(a) Predict the? grade-point average of a student who plays video games 8 hours per week. The predicted? grade-point average is nothing . ?(Round to the nearest hundredth as? needed.)

Explanation / Answer

Sol:

  y= ?0.0548 x + 2.9361

x = 8
The predicted grade point average is
y = -0.0548*8 + 2.9361
= 2.4977

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