This is a simulation, based on a probability question presented at the Scratch Educators Meetup in Cambridge on November 7, 2015: "Video game machines manufactured by Glazem Inc. are shipped in lots of 12. Before shipping, a quality-control inspector randomly selects a sample of 3 from each lot for testing. If the sample contains any defective games, the entire lot is rejected. What is the probability that a lot containing exactly one defective game will still be shipped?" In this version, the user can set the size of the lot, the percentage of items from each lot to be checked, and the total number of lots to be inspected. In each inspected lot, the defective item is placed in a random position in the lot, and the inspected items are selected at random from each lot, (although it turns out that neither of these factors affects the outcome of the simulation).
