Little Johnny’s parents have a menagerie consisting of 50% d…
Little Johnny’s parents have a menagerie consisting of 50% dogs, 40% cats, and 10% venomous snakes. They know from experience that 10% of the dogs bite, 5% of the cats bite, and 20% of the snakes bite. Given that little Johnny has been bitten, what is the probability it was a venomous snake?