Warren and Trey began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Warren took a test in English and earned a 74, and Trey took a test in Social Studies and earned a 62. Use the fact that all the students' test grades in the English class had a mean of 73.9 and a standard deviation of 11.7, and all the students' test grades in Social Studies had a mean of 65.5 and a standard deviation of 9.1 to answer the following questions. a) Calculate the z-score for Warren's test grade. z=z= b) Calculate the z-score for Trey's test grade. z=z= c) Which person did relatively better?

• Warren
• Trey
• They did equally well.