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A random variable X has Poisson distribution with mean 2. Then P(X>1.5) equals

Options

  1. A2 e ^2
  2. B0
  3. C1- 3 e ^2
  4. D3 e ^2

Correct answer

C. 1- 3 e ^2

Step-by-step solution

aligned & P(x=k)=e^ - ^k k ! & P(x 2)=1-P(x=0)-P(x=1) & =1-e^ - -e^ - ( 1 ! ) & =1- 3 e^2 . aligned

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