If inspection finds the item to be defective, what is the revised probability that...

korr

New member
...the item came from machine? Machine A produces 15% defectives, machine B produces 10% defectives, and machine C produces 5% defectives. Of the total output from these machines. 10% of the items are from machine A, 30% from B, and 60% from C. One item is selected at random from a day's production. If inspection finds the item to be defective, what is the revised probability that the item came from machine C?
 
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