When observing a checkout line at a food store, the average number of people served is 30 per hour. Using the Poisson distribution, what is the probability that 20 people check out in any given hour?

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The Answer of When observing a checkout line at a food store, the average number of people served is 30 per hour. Using the Poisson distribution, what is the probability that 20 people check out in any given hour?

When Observing a Checkout Line at a Food Store, the Average