SOLUTION: In Northern Yellowstone Lake, earthquakes occur at a mean rate of 1.8 quakes per year. Let X be the number of quakes in a given year. (c) what's the probability More than five

Question 321126: In Northern Yellowstone Lake, earthquakes occur at a mean rate of 1.8 quakes per year. Let X be the number of quakes in a given year.
(c) what's the probability More than five quakes?
Answer by galactus(183) (Show Source): You can put this solution on YOUR website!
This appears to be a Poisson probability.
It is given by . Where L represents lambda and the mean. In this case, 1.8 or 9/5.
Since it says more than 5, we sum up the probabilities from 0 to 5 and subtract from 1.

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