A manufacturer obtains? clock-radios from three different? subcontractors: 10?% from? A, 30?% from? B, and 60?% from C. The defective rates for these subcontractors are 3?%, 2 %, and 5?% respectively. If a defective? clock-radio is returned by a? customer, what is the probability that it came from subcontractor? A?
The probability that it came from subcontractor A is