We hear that teenagers in today’s world spend too much time playing video games. Does this have a significant effect on the grades they earn at school? You could test by this dividing students into two groups, those whose current high school grade-point average (GPA) is 3.0 or above and those whose GPA is below 3.0. Then you could sample students from each of these groups, discover the numbers of hours per week spent playing video games, and run a test to see whether high-GPA students average less time playing video games than low-GPA students. Run such a test on the (fictional) data in the file P09_57.xlsx and report the results. If the results are significant, does this prove that too many hours spent playing video games causes lower GPAs? Explain.