Various sources provide different earthquake data, but assume
that for a recent 41-year period in the world, there were 5469
earthquakes measured at 6.0 or higher on the Richter
scale.
(5)
Find the mean number of earthquakes per year.
Use the Poisson distribution to find the probability that in a
given year there are exactly 133 earthquakes that measures 6.0 or
higher on the Richter
scale.