An air traffic controller has noted that it clears an average of 7 planes per hour for landing. What is the probability that during the next two hours exactly 15 planes will be cleared for landing?

An air traffic controller has noted that it clears an average of 7 planes per hour for landing. What is the probability that during the next two hours exactly 15 planes will be cleared for landing?

An air traffic controller has noted that it clears an average of 7 planes per hour for landing. What is the probability that during the next two hours exactly 15 planes will be cleared for landing?


a. .0651

b. .0033

c. .0989

d. Not enough information is given to answer the problem.


Answer: c. .0989


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