SOLUTION: A quality control engineer at a light bulb plant estimates that 1% of the bulbs it sells are defective. If you purchase a package of 3 bulbs, what is the probability that exactly o

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Question 729328: A quality control engineer at a light bulb plant estimates that 1% of the bulbs it sells are defective. If you purchase a package of 3 bulbs, what is the probability that exactly one of them is defective?
Found 2 solutions by lynnlo, ikleyn:
Answer by lynnlo(4176) About Me  (Show Source):
Answer by ikleyn(53339) About Me  (Show Source):
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A quality control engineer at a light bulb plant estimates that 1% of the bulbs it sells are defective.
If you purchase a package of 3 bulbs, what is the probability that exactly one of them is defective?
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This is a standard problem on binomial distribution. 


Use a standard formula

    P = C%283%2C1%29%2A0.01%5E1%2A%281-0.01%29%5E2 = 3%2A0.01%2A0.99%5E2 = 0.0294 (rounded).      ANSWER

Solved.