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Question: cheryl has taken two quizzes in her history class...

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Cheryl has taken two quizzes in her history class. She scored 15 on the 1st quiz, for which the mean of all scores was 12 and the standard deviation was 2.4. Her score on the 2nd quiz, for which the mean of all scores was 11 and the standard deviation was2.0, was 14. In comparison to her classmates, did Cheryl do better on the 1st quiz or on the 2nd quiz?
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