Solution Found!
Solved: You Explain It! Video Games and GPAsA student at
Chapter 3, Problem 13AYU(choose chapter or problem)
Problem 13AYU
You Explain It! Video Games and GPAsA student at Joliet 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 ŷ = –0.0526 x + 2.9342.
(a)Predict the grade-point average of a student who plays video games 8 hours per week.
(b)Interpret the slope.
(c)If appropriate, interpret the y-intercept.
(d)A student who plays video games 7 hours per week has a grade-point average of 2.68. Is this student’s grade-point average above or below average among all students who play video games 7 hours per week?
Questions & Answers
QUESTION:
Problem 13AYU
You Explain It! Video Games and GPAsA student at Joliet 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 ŷ = –0.0526 x + 2.9342.
(a)Predict the grade-point average of a student who plays video games 8 hours per week.
(b)Interpret the slope.
(c)If appropriate, interpret the y-intercept.
(d)A student who plays video games 7 hours per week has a grade-point average of 2.68. Is this student’s grade-point average above or below average among all students who play video games 7 hours per week?
ANSWER:Answer :
Step 1 :
Given, in a survey of 20 randomly selected full-time students to determine the relation between the number of hours of video game playing each week and grade point average.
The least square regression line is = -0.0526
+2.9342
- We have to predict the grade point average of student who plays video games 8 hours per week.
Let, = -0.0526