Question 669065: The rates of on-time flights for commercial jets are continuously tracked by the U.S. Department of Transportation. Recently, Southwest Air had the best reate with 80 % of its flights arriving on time. A test is conducted by randomly selecting 16 Southwest flights and observing whether they arrive on time. (a) Find the probability that at least 2 flights arrive late.
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Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The rates of on-time flights for commercial jets are continuously tracked by the U.S. Department of Transportation. Recently, Southwest Air had the best reate with 80 % of its flights arriving on time. A test is conducted by randomly selecting 16 Southwest flights and observing whether they arrive on time. (a) Find the probability that at least 2 flights arrive late.
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Binomial Problem with n = 16 ; p(on time) = 0.8 ; p(late) = 0.2
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P(2<= x <=16) = 1 - binomcdf(16,0.2,1) = 0.8593
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Cheers,
stan H.
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