Cheryl has taken two quizzes in her history class. She scored 15 on the first quiz, for which the mean of all scores was 12 and the standard deviation was 2.4. Her score on the second quiz, for which...


Cheryl has taken two quizzes in her history class. She scored 15 on the first quiz, for which the mean of all scores was 12 and the standard deviation was 2.4. Her score on the second quiz, for which the mean score was 11 and standard deviation was 2.0 was 14. In comparison to her classmates, did Cheryl do better on the first quiz or the second quiz?



Jun 02, 2022
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