Ana and Bill are comparing their recent midterm scores. Ana received a 95 on the midterm and Bill received an 84 on the midterm. However, they are in different classes and their exams were slightly different. The mean midterm score in Ana's class was 82 with a standard deviation of 10 points. The mean midterm score in Bill's class was 75 with a standard deviation of 10. Both tests were normally distributed.

a.) What percentage of test scores were below each students' score on their respective tests? (3 marks)

b.) Which student did better on the midterm? What evidence did you use to come to this conclusion? (2 marks)