Use technology (such as a Poisson calculator) to find the probabilities shown below. Then determine if the events are unusual.
The mean number of oil tankers at a port city is
10
per day. The port has facilities to handle up to
12
oil tankers in a day. Find the probability that on a given day, (a)
ten
oil tankers will arrive, (b) at most three oil tankers will arrive, and (c) too many oil tankers will arrive.
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