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10. The mean number of earthquakes greater than 5 in Tokyo in a year is 2.80....

10. The mean number of earthquakes greater than 5 in Tokyo in a year is 2.80.

(a) Find the mean and standard deviation of the number of earthquakes greater than 5 in Tokyo. (2 mark)

(b) Find the probability that the number of earthquakes in a year will be at most 2?

(c) Find the probability that no earthquakes will occur in Tokyo during a two-year period.

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