February 21, 2017

Homework Help: math1

Posted by pankaj on Thursday, May 3, 2012 at 5:08am.

(ii) A factory has two machines. Past records show that the first machine produces 40% of output and the second machine produces 60% of output. Further 4% and 2% of the products produced by the first machine and the second machine were defectives. If a defective item is drawn at random, what is the probability that the defective item was produced by the first machine or second machine?

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