For a Poisson random variable with parameter λ=3\lambda = 3λ=3, what is P(X=0)P(X = 0)P(X=0)?
e−3e^{-3}e−3
3e−33e^{-3}3e−3
1−e−31 - e^{-3}1−e−3
e−3/3e^{-3}/3e−3/3