The number of magnitude 5 or larger earthquakes in Alaska follow a Poisson distribution with an average of 20 earthquakes per year. Round your answers to four decimals. In the following questions assume we are only talking about the magnitude 5 or larger earthquakes and the earthquakes are independent of one another. Round answers to at least 4 decimal places. a) Find the probability of exactly 25 earthquakes in a particular year. 0.0446 b) Find the probability of exactly one earthquake in one month. c) Find the probability that there are no earthquakes in a month. d) Find the probability that there are two earthquakes in a 3 month period.

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