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October 23, 2014

Homework Help: math

Posted by Rmz on Wednesday, January 27, 2010 at 8:46pm.

A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to posses a normal distribution with a mean of 450 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary-school can run the mile in less than 335 seconds.

I do not even know what this is asking...can anyone help??

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