SOLUTION: Factories A and B produce computers. Factory A produces 3 times as many computers as factory B. The probability that an item produced by factory A is defective is 0.024 and the pro

Question 1133368: Factories A and B produce computers. Factory A produces 3 times as many computers as factory B. The probability that an item produced by factory A is defective is 0.024 and the probability that an item produced by factory B is defective is 0.038.
A computer is selected at random and it is found to be defective. What is the probability it came from factory A?
Answer by ikleyn(52793) (Show Source): You can put this solution on YOUR website!
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This probability is the ratio of two numbers:


    - the numerator is the number of defective computers produced by Factory A.


    - the denominator is the total number of defective computers produced by both factories.


    P =  = cancel x in the numerator and in the denominator =  = use your calculator.

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