Question 267680: Please help with this probability question. Thank You!
A recent survey found that 40% of air traffic controllers found their job extremely stressful. Suppose 12 air traffic controllers are selected at random, what is the probability that 2 or more consider their job stressful?
Thank you very much!
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A recent survey found that 40% of air traffic controllers found their job extremely stressful. Suppose 12 air traffic controllers are selected at random, what is the probability that 2 or more consider their job stressful?
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It's a binomial problem:
n= 12 ; p = 0.4
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P(2<= x <=12) = 1 - P(0<= x <=1) = 1 - binomcdf(12,0.4,1) = 0.9804
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Cheers,
Stan H.
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