1. Let grad be a dummy variable for whether a student-athlete at a large university graduates in five years. Let hsGPA and SAT be high school grade point average and SAT score, respectively. Let study...

1. Let
grad
be a dummy variable for whether a student-athlete at a large university graduates in five years. Let
hsGPA
and
SAT
be high school grade point average and SAT score, respectively. Let
study
be the number of hours spent per week in an organized study hall. Suppose that, using data on 420 student-athletes, the following logit model is obtained: P^ 1grad
5 10hsGPA,SAT,study2 5 L121.17 1 .24
hsGPA
1 .00058
SAT
1 .073
study2, where L1z
2 5 exp1z
2/ 31 1 exp1z
2 4 is the logit function. Holding
hsGPA
fixed at 3.0 and
SAT
fixed at 1,200, compute the estimated difference in the graduation probability for someone who spent 10 hours per week in study hall and someone who spent 5 hours per week.