2.

A manufacturer obtains clock-radios from three different subcontractors: 40% from A, 40% from B, and 20% from C. The defective rates for these subcontractors are 1%, 4%, and 2% respectively. If a defective clock-radio is returned by a customer, what is the probability that it came from subcontractor A? From B? From C? . . . . . The probability that it came from subcontractor A is (Type a decimal. Round to three decimal places if needed.) The probability that it came from subcontractor B is. (Type a decimal. Round to three decimal places if needed.) The probability that it came from subcontractor C is (Type a decimal. Round to three decimal places if needed.)Suppose that 4 cards from a standard deck of 52 playing cards are successively drawn at random without replacement (a) Find the probability that all 4 are aces. (b) Find the probability that all 4 are clubs. (a) The probability that all 4 are aces is (Type an integer or a simplified fraction.) (b) The probability that all 4 are clubs is (Type an integer or a simplified fraction.)