Question

2.104

At one university, the students are given z-scores at the end of each semester rather than the traditional GPSs. The means and standard deviation of all students’ cumulative GPAs, on which the z-scores are based, are 2.7 and .5, respectively.

1. Translate each of the following z-scores to the corresponding GPA: z = 2.0, z = -1.0, z = .5, z = - 2.5.
2. Students with z-scores below -1.6 are put on probation. What is the corresponding probationary GPA?
3. The president of the university wishes to graduate the top 16% of the students with some honors and the top 2.5% with all honors. Where (approximately) should the limits be set in terms of z-scores? In terms of GPAs? What assumption, if any, did you make about the distribution of the GPAs at the university?

Answer 1