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A pharmacist receives a shipment of 18 bottles of a drug and has 3 of the...

A pharmacist receives a shipment of 18 bottles of a drug and has 3 of the bottles tested. If 3 of the 18 bottles are contaminated, what is the probability that no more than 1 of the tested bottles is contaminated? Express your answer as a fraction or a decimal number rounded to four decimal places.

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Answer #1

This problem we can solve using Binomial distribution, because the bottle is either contaminated or non-contaminated.

Therefore, here p = 3/18 = 0.1667

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