Distribution graph

#### Description

The experiment simulates a value of a random variable with P&ocaute;lya's distribution, with $$a$$ initial red balls, $$b$$ initial green balls, $$c$$ balls added on each trial, and $$n$$ trials. The value is recorded on each update. The parameters $$a$$, $$b$$, $$c$$, and $$n$$ can be varied with input controls.