So let's say we're looking at sample means, and we get a sample mean that is way out here. We say, well, there's less than a 1% chance of that happening, given that the null hypothesis is true. So we are going to reject the null hypothesis. So we will reject the null hypothesis. Now what does that mean, though? Let's say that this area, the probability of getting a result like that or that much more extreme is just this area right here. So let's say that's half a percent.