SOLUTION: If a new drug is found to be defective 70% the time it is used. what is the probability that in a random sample of 3 patients it will be effective on all of them?

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Question 840474: If a new drug is found to be defective 70% the time it is used. what is the probability that in a random sample of 3 patients it will be effective on all of them?
Answer by reviewermath(1029) About Me  (Show Source):
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Q:
If a new drug is found to be defective 70% the time it is used. what is the probability that in a random sample of 3 patients it will be effective on all of them?
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A:
probability = %281+-+0.7%29%5E3+=+highlight%280.027%29