Let X∼Exp(λ)X \sim \text{Exp}(\lambda)X∼Exp(λ). What is the hazard function h(x)=f(x)1−F(x)h(x) = \frac{f(x)}{1-F(x)}h(x)=1−F(x)f(x)?
λx\lambda xλx
λ\lambdaλ
e−λxe^{-\lambda x}e−λx
λ2\lambda^2λ2