Question 1101848: A shelf in the Metro Department Store contains 95 colored ink cartridges for a popular ink-jet printer. Six of the cartridges are defective.
If a customer selects 3 cartridges at random from the shelf, the probability that they are all defective is .00014
(b) If a customer selects 3 cartridges at random from the shelf, what is the probability that at least 1 is defective? (Round your answer to three decimal places.)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A shelf in the Metro Department Store contains 95 colored ink cartridges for a popular ink-jet printer. Six of the cartridges are defective.
If a customer selects 3 cartridges at random from the shelf, the probability that they are all defective is .00014
(b) If a customer selects 3 cartridges at random from the shelf, what is the probability that at least 1 is defective?
P(none are defective) = 89C3/95C3 = 0.820
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P(at least one is defective) = 1- P(none are defective) = 1-0.820 = 0.180
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Cheers,
Stan H.
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