Cheick and Miranda began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Cheick took a test in English and earned a 79.1, and Miranda took a test in Math and earned a 72. Use the fact that all the students' test grades in the English class had a mean of 72.9 and a standard deviation of 12.1, and all the students' test grades in Math had a mean of 60.8 and a standard deviation of 10.3 to answer the following questions.

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



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



c) Which person did relatively better?
Cheick
Miranda
They did equally well.