Question #119760
A random variable X has Poisson distribution with mean equal to 0.4. What is the probability that the random variable is greater than zero?.
1
Expert's answer
2020-06-04T21:17:35-0400

P(X>0)=1−P(X=0)=1−e−0.4(0.4)00!=1−0.67=0.33P(X>0)=1-P(X=0)\\ =1-\frac{e^{-0.4}(0.4)^{0}}{0!}=1-0.67=0.33


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