Given X∼Poisson(λ=2)X \sim \text{Poisson}(\lambda = 2)X∼Poisson(λ=2), what is the probability P(X≤1)P(X \leq 1)P(X≤1)?
3e−23e^{-2}3e−2
e−2e^{-2}e−2
2e−22e^{-2}2e−2
4e−24e^{-2}4e−2