Alexis and Adriana began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Alexis took a test in Art History and earned a 74.7, and Adriana took a test in Math and earned a 69.6. Use the fact that all the students' test grades in the Art History class had a mean of 73 and a standard deviation of 11.5, and all the students' test grades in Math had a mean of 65.1 and a standard deviation of 7.9 to answer the following questions. a) Calculate the z-score for Alexis's test grade. Z= [Round your answer to two decimal places.] b) Calculate the z-score for Adriana's test grade. Z= They did equally well. [Round your answer to two decimal places.] c) Which person did relatively better? O Alexis O Adriana 4