SOLUTION: Let X be a discrete random variable whose values lie in {0, 1, 2, ...} with probability mass function {{{f(x)=(1/ex!)}}} . Find P(X ≤ 2) and P(X > 2)

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Question 1136605: Let X be a discrete random variable whose values lie in {0, 1, 2, ...} with probability mass function . Find P(X ≤ 2) and P(X > 2)
Answer by ikleyn(52909)   (Show Source): You can put this solution on YOUR website!
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P(X <= 2 ) = P(0) + P(1) + P(2) =  =  =  = use your calculator.



P( X > 2 ) = complement to  P( X <=2 ) = 1 - P(X <=2 ) = see the line above = 1 -  = use your calculator.


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