(3) Suppose the number of earthquakes occurring in an area approximately follows a Poisson distribution with an average rate of 2 earthquakes every year. Show your work when solving the following problems. (a) Find the probability that there will be 1 to 3 (inclusive) earthquakes during the next year in this area. (b) Find the probability that there will be exactly 5 earthquakes during the next 3-yearperiod. (c) Consider 10 randomly selected years during last century. What is the probability that there will be at least 3 of those years with no earthquake?

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(3) Suppose the number of earthquakes occurring in an area approximately follows a Poisson
distribution with an average rate of 2 earthquakes every year. Show your work when
solving the following problems.

(a) Find the probability that there will be 1 to 3 (inclusive) earthquakes during the next
year in this area.

(b) Find the probability that there will be exactly 5 earthquakes during the next 3-yearperiod.

(c) Consider 10 randomly selected years during last century. What is the probability
that there will be at least 3 of those years with no earthquake?

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