Julio and Ahmed began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Julio took a test in English and earned a 80.9, and Ahmed took a test in Art History and earned a 67.6. Use the fact that all the students' test grades in the English class had a mean of 70.7 and a standard deviation of 11.3, and all the students' test grades in Art History had a mean of 60.3 and a standard deviation of 10.9 to answer the following questions.

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

z

=

z=

[Round your answer totwo decimal places.]

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

z

=

z=

[Round your answer totwo decimal places.]

c)Which person did relatively better?

• Julio
• Ahmed
• They did equally well.