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

Algebra ->  Probability-and-statistics -> 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       Log On


   



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) About Me  (Show Source):
You can put this solution on YOUR website!
This appears to be a Poisson probability.
It is given by P%28X%29=%28L%29%5EX%2Ae%5E%28-L%29%2FX%21. 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.