But this is a tool for at least saying how good is our result. And so, this is going to be about 95%. Or we could say that the probability that p is within 0.10 of our sample mean that we actually got. So what was the sample mean that we actually got? It was 0.43. So if we're within 0.1 of 0.43, that means we are within 0.43 plus or minus 0.1 is also, roughly, we're reasonably confident, it's about 95%. And I want to be very clear.