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Test scores for a history class had a mean of 79 with a standard deviation of4.5. Test scores for a physics class had a mean

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Test scores for a history class had a mean of 79 with a standard deviation of4.5. Test scores for a physics class had a mean of 69 with a standarddeviation of 3.7. Suppose a student gets a 68 on the history test and a 87 on

the physics test. Calculate the z-score for each test. On which test did the student perform better?

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