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April 19, 2014

Homework Help: Stats

Posted by MoJo on Thursday, January 24, 2008 at 11:03am.

Fortunately, plane crashes are rare events. Suppose that commercial crashes occur on an average (mean) of 1.1 per year (Hint: Poisson).
a. What is the probability that this year will be crash free?
b. If there is a crash, what is the probability that there will be more than two?

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