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In: Statistics and Probability

It is assumed that there is an average of 12 customers per hour at a service...


It is assumed that there is an average of 12 customers per hour at a service counter according to a Poisson process.

a) How likely is it that 4 customers show up at this counter in the next 15 minutes?

b) Given that 4 customers showed up at this counter in a given 15-minute period, what is the probability that there were at least 2 customers that showed up in the last 5 minutes of this period?

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