Let X∼Exp(1)X \sim \text{Exp}(1)X∼Exp(1) and Y∼Exp(1)Y \sim \text{Exp}(1)Y∼Exp(1) be independent. What is the distribution of Z=X−YZ = X - YZ=X−Y?
Laplace distribution
Normal distribution
Exponential distribution
Uniform distribution