Factories
A,B
and
C
produce computers. Factory
A
produces 2 times as many computers as factory
C
. And factory
B
produces 6 times as many computers as factory
C
. The probability that a computer produced by factory
A
is defective is 0.039 , the probability that a computer produced by factory
B
is defective is 0.042 , and the probability that a computer produced by factory
C
is defective is 0.036 . Let
D
represent the event that the computer is defective. A computer is selected at random and it is found to be defective. What is the probability it came from factory
B
? |)
(
u