February 27, 2017

Homework Help: math

Posted by dawn on Monday, August 27, 2012 at 8:16pm.

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 172 and a variance of 4. The material is considered defective if the breaking strength is less than 168 pounds. What is the probability that a single, randomly selected piece of material will be defective?

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