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Please show your work... From past history, the scores on a statistics test are normally distributed with a mean score of 70 and a standard

Please show your work...

From past history, the scores on a statistics test are normally distributed with a mean score of 70 and a standard deviation of 5. To earn a "C" on the test, a student must be in the top 25% of the class. A student would need to score at least ______ to receive a "C" grade.

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