So there's a 95% chance that the true mean, and let me put this here, this is also the same thing as the mean of the sampling distribution of the sampling mean, is in that interval. And to do that, let me just throw out a few ideas. What is the probability, that if I take a sample and I were to take a mean of that sample, so the probability that a random sample mean is within two standard deviations of the sampling mean of our sample mean. So what is this probability right over here? Let's just look at our actual distribution. So this is our distribution. This right here is our sampling mean.