February 20, 2017

Homework Help: Management

Posted by Rajan on Thursday, March 28, 2013 at 1:09pm.

The bulbs manufactured by a company gave a mean life of 3000 hours with standard
deviation of 400 hours. If a bulb is selected at random, what is the probability it will
have a mean life less than 2000 hours?
1) Calculate the probability.
2) In what situation does one need probability theory?

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