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April 17, 2014

Homework Help: Probability and statistics

Posted by Arun on Thursday, March 1, 2012 at 12:30am.

The probability that the life time of randomly chosen device is below average, average,above average are respectively 0.2,0.5,0.3. The probability that of the 3 randomly chosen devices lifetimes of 2 are above average and 1 below average equals

a.0.054,b.0.018,c.0.036,d.0.012

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