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Use an appropriate approximating distribution to determine the probability that, on a randomly selected day, the customer service desk is unable to deal with every enquiry received.
Mathematics 9709 · AS & A Level · The Poisson distribution
The Poisson distribution — practice question
The daily number of enquiries reaching a customer service desk follows a Poisson distribution with mean $45.2$. If over 60 enquiries arrive in one day, the customer service desk is unable to handle all of them.