A continuous random variable TTT has hazard function h(t)=λh(t) = \lambdah(t)=λ for t≥0t \geq 0t≥0. What is P(T>s+t∣T>s)P(T > s+t | T > s)P(T>s+t∣T>s)?
e−λse^{-\lambda s}e−λs
e−λte^{-\lambda t}e−λt
1−e−λt1 - e^{-\lambda t}1−e−λt
e−λ(s+t)e^{-\lambda(s+t)}e−λ(s+t)