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Mark earned a 64 on his last science quiz. If Mark’s z-score was -2.8 and the standard deviation was 10, find the mean grade on the quiz.
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Mark earned a 64 on his last science quiz. If Mark’s z-score was -2.8 and the standard deviation was 10, find the mean grade on the quiz.

User Tftd
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1 Answer

3 votes

Answer:

he score is 2.15 standard deviations above the mean.

Explanation:

User Torgheh
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