For a recent period of 100 years, there were 77 major earthquakes in a particular region. Assuming that the Poisson distribution is a suitable model, find the mean number of major earthquakes per year. mean = 0.77 Now, find the probability distribution for the number of earthquakes in a randomly selected year: X P 0 0.4630 V 0.3565 2 0.1373 3 0.0352 4 0.0068 X 5 0.0010 X 6 or more 0.0002 X