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8 June, 02:19

Raul received a score of 72 on a history test for which the class mean was 70 with a standard deviation of 9. he received a score of 71 on a biology test for which the class mean was 70 with standard deviation 7. on which test did he do better relative to the rest of the class?

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  1. 8 June, 02:48
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    Raul had done better on the history test than the biology test by 2%
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