The midterm scores in Statistics 101 had a mean of 72 and an SD of 12. The exam scores in Psychology 101 had a mean of 72 and an SD of 20. For both exams, the scores followed the normal curve.
Both instructors gave the top 10% of the scores A's, the next 25% B's, and the next 40% C's.
John earned a score of 89 on both exams. On which exam did John receive the higher letter grade?
What was the minimum exam score required for a B in Statistics? What was the minimum exam score required for a B in Psychology?