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 ģ= -0.0564x + 2 9482 (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) (b) Interpret the slope For each additional hour that a student spends playing video games in a week, the grade-point average will decrease by points, on average (c) If appropriate, interpret the y-intercept O A The grade-point average of a student who does not play video games is 2.9482 B. The average number of video games played in a week by students is 29482 OC. It cannot be interpreted without more information (d) A student who plays video games 7 hours per week has a grade-point average of 2.66. Is the student's grade-point average above or below average among all students who play video games 7 hours per week? The student's grade-point average is average for those who play video games 7 hours per week