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 15 Southwest flights and observing whether they arrive on time. (a) Find the probability that at least 8 flights arrive on time. (b) Would it be unusual for Southwest to have 3 flights arrive late? (Enter YES or NO)
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 15 Southwest flights and observing whether they arrive on time. (a) Find the probability that at least 8 flights arrive on time. (b) Would it be unusual for Southwest to have 3 flights arrive late? (Enter YES or NO)
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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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 15 Southwest flights and observing whether they arrive on time. (a) Find
the probability that at least 8 flights arrive on time.
(b) Would it be unusual for Southwest to have 3 flights arrive late?
(Enter YES or NO)
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