Statistics
posted by sand .
Data collected on volcanic eruptions give a mean time between eruptions of 29 months. Assume these eruptions occur as a Poisson process in time, find the:
(a) Expected number of eruptions during the fiveyear period beginning from the time you have read this question.
(b) Probability that there will be exactly two eruptions during this fiveyear period.
(c) Probability that at least three years will pass from now before the next erupt
(d) Probability that the waiting time between two consecutive earthquakes exceeds two year
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