What is the probability that it came from machine A

What is the probability that it came from machine A



A factory has 3 machines, A, B, C producing 1000, 2000 and 3000 bolts per day respt. A produces 1% defectives, B 1.5% & C 2% defective. A bolt is checked at random at the end of a day and is found to be defective. What is the probability that it came from machine A?





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