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Question 3
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Heaven and Aponi began arguing about who did better on their tests, but they couldn't decide who did
better given that they took different tests. Heaven took a test in Math and earned a 72, and Aponi took a
test in Social Studies and earned a 62. Use the fact that all the students' test grades in the Math class had a
mean of 76.7 and a standard deviation of 11.2, and all the students' test grades in Social Studies had a
mean of 61.2 and a standard deviation of 8.7 to answer the following questions.
a) Calculate the z-score for Heaven's test grade.
b) Calculate the z-score for Aponi's test grade.
c) Which person did relatively better?
O Heaven
Aponi