You invite into your home a random individual from a small town. Unfortunately, it's a zombie town and only a few are still normal (including you). You also know that turning into a zombie depends on the degree of exposure to a radioactive substance. The distribution of exposure is normally distributed with a mean of 2700 on radioactive measures, and a SD of 300. A person will turn into a zombie if the radioactivity exposure is at or beyond 2200. What is the probability that the person you just invited might be a zombie -- remember, zombies will eat your brain.