I have a question concerning random variables. Let us assume that we have two random variables $X$ and $Y$. Let's say $X$ is Poisson distributed with parameter $\lambda_1$, and $Y$ is Poisson distributed with parameter $\lambda_2$.
When you build the fracture from $X/Y$ and call this a random variable $Z$, how is this distributed and what is the mean? Is it $\lambda_1/\lambda_2$?