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July 28, 2014

Homework Help: Statistics

Posted by Renita on Friday, February 3, 2012 at 2:27pm.

Suppose an automobile association reports that the average time it takes to respond to an emergency call is 25 minutes. Assume the variable is approximately normally distributed and the standard deviation is 4.5 minutes. If 104 calls are randomly selected, approximately how many will be responded to in less than 22 minutes?

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