Angelo and Aaliyah began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Angelo took a test in Science and earned a 76.3, and Aaliyah took a test in Math and earned a 61.3. Use the fact that all the students' test grades in the Science class had a mean of 73.2 and a standard deviation of 10.7, and all the students' test grades in Math had a mean of 66.5 and a standard deviation of 8 to answer the following questions. a) Calculate the z-score for Angelo's test grade. = b) Calculate the z-score for Aaliyah's test grade. = c) Which person did relatively better?

• Angelo
• Aaliyah
• They did equally well.