Marcus and Shane began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Marcus took a test in Science and earned a 73.3, and Shane took a test in English and earned a 64.1. Use the fact that all the students' test grades in the Science class had a mean of 71.5 and a standard deviation of 9.5, and all the students' test grades in English had a mean of 63.4 and a standard deviation of 10.6 to answer the following questions.

a)Calculate the z-score for Marcus's test grade.

z

=

z=

[Round your answer totwo decimal places.]

b)Calculate the z-score for Shane's test grade.

z

=

z=

[Round your answer totwo decimal places.]