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December 19, 2014

Homework Help: statistics

Posted by Emily on Monday, October 24, 2011 at 2:27pm.

Suppose the amount of time it takes for statistics students to complete their midterm is normally distributed with a mean of 85.70 minutes and a standard deviation of 22.55 minutes. If 10 students are randomly selected, what is the probability that they would average less than one and three-quarter hours to take their midterm?

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