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Airplanes land at an airport at an average rate of six planes every 20 minutes. Assume a Poisson distribution.What is the probability that at least

Airplanes land at an airport at an average rate of six planes every 20 minutes. Assume a Poisson distribution.What is the probability that at least two planes will land in a 4-minute period? A. 0.3374 B. 0.4981 C. 0.6626 D. 0.5183

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