say I have 6 people drawing from their own box, each box contains 10,000 unique barcodes. Now at the end of the experiment each person has drawn roughly 10-20 barcodes. How do I test if the barcodes are not siginficantly overlapping between each person. In other words I want to show that the barcodes are just random? I'm thinking of something like a hypergeometric test or some sort of contigency table, however in this case there there are N=6 and 10,000 unique rows.