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August 30, 2015

Homework Help: statistics

Posted by Penny on Tuesday, May 28, 2013 at 4:20pm.

On a national standardized test, with normally distributed results, the middle 68% of students scored between 40 points and 70 points, and the mean score was 55 points.
Based on this information, which of the following represents a score in the 97.5th percentile?

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