Thanks for the example! I didn&#x27;t understand it, but then I asked about it on cross-validated and the cross-validated hive mind helped me get it: <a href="http:&#x2F;&#x2F;stats.stackexchange.com&#x2F;questions&#x2F;209057&#x2F;independence-of-two-decks-of-cards-each-with-a-different-numbers-of-cards&#x2F;209062#209062" rel="nofollow">http:&#x2F;&#x2F;stats.stackexchange.com&#x2F;questions&#x2F;209057&#x2F;independence...</a>