Question: On average 108 customers per hour join a queue at any one of the checkout counters of a grocery store. Suppose that the number of

On average 108 customers per hour join a queue at any one of the checkout counters of a grocery store. Suppose that the number of customers joining a queue at the checkout counters follows an approximate Poisson distribution.

a. What is the probability that in the next minute:

i. exactly four customers join a queue?

ii. at least one customer joins a queue?

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