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April 18, 2014

Homework Help: Statistics

Posted by Stacy on Wednesday, December 5, 2012 at 12:13am.

Please Help!!!

I am having a small Problem Working this Problem. I am just not understanding. Could someone please assist?

The lifetime of a brand of DVD player follows a normal distribution with
a mean of 8 years and a standard deviation of 6 months. Find the probability
that the lifetime is more than 7 years.

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