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Raul received a score of 72 on a history test for which the class mean was...

Raul received a score of 72 on a history test for which the class mean was 70 with a standard deviation of 7. He received a score of 80 on a biology test for which the class mean was 70 with standard deviation 5. On which test did he do better relative to the rest of the class? a) biology test b) history test C) the same

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Answer #1

History test

Mean = = 70

Standard deviation = = 7

Score = X = 72

Biology test

Mean = = 70

Standard deviation = = 5

Score = X = 80

On which test did he do better relative to the rest of the class? a) biology test b) history test C) the same

a) biology test

As Z score is higher

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