Mathematics, 10.10.2021 19:40, missinghalloween13

On her first test in algebra, Mary earned a score of 75, and she made an 65 on her first psychology test. If the average score on the algebra test was a 68, with
s=7, and the average on the psychology test was 91, with s = 6, is Mary doing
better in psychology or in algebra?

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On her first test in algebra, Mary earned a score of 75, and she made an 65 on her first psycholog...