Just a quick question on interpreting what this pdf looks like:
Bacteria are distributed randomly and uniformly throughout river water at the rate of $\lambda$ bacteria per unit volume. n test tubes contain know volumes $v1,v2,...,vn$ of river water are prepared.
So I know it is uniform so the bacteria in each of the tubes is distributed as $uniform(b,a)$.
I guess that it is referring to concentration so $\frac{\lambda}{v_i}, i=1,...,n$ is the concentration in each tube then where do i fit that in with b and a