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An individual is looking to purchase a 100 lightbulbs. They want to test 4 of these...

An individual is looking to purchase a 100 lightbulbs. They want to test 4 of these lightbulbs before buying the 100 lightbulbs. If a set of a 100 bulbs contains 10 defective bulbs, what is the probability that they will find no defective bulbs in a 4 bulb sample. Solve this using the binomial distribution and show your work.

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Answer #1

Here it is given that a set of a 100 bulbs contains 10 defective bulbs, so p=10/100=0.10

Now n=4, using binomial distribution we need to find P(x=0) = BINOMDIST(0,4, 0.1,0) = 0.6561

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