(Answered) A shipment of 11 televisions sets contains 4 defective sets

Statistics

A shipment of 11 televisions sets contains 4 defective sets. A hotel purchases 7 of these televisions sets.

a: In how many ways can a hotel purchase 7 and receive 2 of the defective sets?

b: What is the probability that the hotel receives 2 of the defective sets?

c: What is the probability that the hotel receives at least one of the defective sets?

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