1. Access the students data set, which contains grade-point averages (GPA) and television viewing information (TVHRSWK) for a random sample of 75 tenth-grade students. Test whether there is a statistically significant difference in GPA between students who watch less than two hours of television per weekday and those who watch two or more hours of television. In doing so,

(a) set up the appropriate statistical hypotheses,

(b) perform the test (a ¼ :05), and

(c) draw final conclusions.