If a production facility employs 20 workers on the day shift, 15 workers on the swing shift, and 10 workers on the graveyard shift. What is the probabily that drawing 6 slips (without replacement) that at least one of the shits will be unrepresented in the sample of workers
*Ahem* Mr F edit in red.
Originally Posted by TitaniumX
Let A be the random variable number of dayshift workers in sample.
Let B be the random variable number of swingshift workers in sample.
Let C be the random variable number of graveyardshift workers in sample.