And so we can use this population sample, or I shouldn't call it the population. We should use this sample right here to figure out the expected number of people who would get sick or not sick. And so over here we have 80 out of 380 did not get sick. And I want to be careful. I just said the word population, but we haven't sampled the whole universe of all people taking this herb. This is a sample. I don't want to confuse you.