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A hardware store buys a certain type of screw in a bulk case of 500 screws. An employee is asked to fill a display bin

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A hardware store buys a certain type of screw in a bulk case of 500 screws. An employee is asked to fill a display bin with a fourth of the case. Suppose it is known that 11 screws in the case are defective. a) What is the probability that no defective screws appear in the display bin? b) What is the probability that at least two defective screws appear in the display bin? c) What is the probability that two or three defective screws appear in the display bin

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