
Ethan S. answered 03/29/20
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Clarisse S.
asked 03/29/20A box of 20 ball pens, of which 2 are defective, is being purchased by a buyer. He inspects 5 ball pens at random for testing and rejects the purchase if 1 or more in the sample are found defective. What is the probability that the buyer will purchase the box of ball pens?
Ethan S. answered 03/29/20
Ivy League Math Tutor
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