Angela and Carissa began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Angela took a test in Science and earned a 81.5, and Carissa took a test in Social Studies and earned a 62.4. Use the fact that all the students' test grades in the Science class had a mean of 74.3 and a standard deviation of 12, and all the students' test grades in Social Studies had a mean of 62.6 and a standard deviation of 9.8 to answer the following questions. a) Calculate the z-score for Angela's test grade. z=_________ [Round your answer to two decimal places.] b) Calculate the z-score for Carissa's test grade. z=________ [Round your answer to two decimal places.]
Angela and Carissa began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Angela took a test in Science and earned a 81.5, and Carissa took a test in Social Studies and earned a 62.4. Use the fact that all the students' test grades in the Science class had a mean of 74.3 and a standard deviation of 12, and all the students' test grades in Social Studies had a mean of 62.6 and a standard deviation of 9.8 to answer the following questions.
a) Calculate the z-score for Angela's test grade.
z=_________ [Round your answer to two decimal places.]
b) Calculate the z-score for Carissa's test grade.
z=________ [Round your answer to two decimal places.]
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