If X∼Exp(λ=0.5)X \sim \text{Exp}(\lambda=0.5)X∼Exp(λ=0.5), what is the probability P(X>2)P(X > 2)P(X>2)?
e−2e^{-2}e−2
e−1e^{-1}e−1
1−e−11 - e^{-1}1−e−1
e−0.5e^{-0.5}e−0.5