Question 943868: A new surgery is successful 85% of the time. If the results of 7 such surgeries are randomly sampled, what is the probability that more than 4 of them are successful?
Carry your intermediate computations to at least four decimal places, and round your answer to at least two decimal places.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A new surgery is successful 85% of the time. If the results of 7 such surgeries are randomly sampled, what is the probability that more than 4 of them are successful?
Carry your intermediate computations to at least four decimal places, and round your answer to at least two decimal places.
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Binomial Problem with n = 7 and p(successful) = 0.85
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P(x >= 4) = 1 - binomcdf(7,0.85,3) = 1 - 0.0121
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= 0.9879
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Cheers,
Stan H.
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