SOLUTION: 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 rate with 80 % of its fligh
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Question 1180057: 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 rate with 80 % of its flights arriving on time. A test is conducted by randomly selecting 10 Southwest flights and observing whether they arrive on time.
(a) Find the probability that exactly 3 flights arrive late . Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Three arrive late means 7 arrive on time.
probability is 10C7*0.8^7*0.2^3=0.2013
also binompdf(10,0.2,3)=0.2013
