Or maybe you could call it a z distribution if you want. If you look at a normal distribution, a completely normalized normal distribution, its mean is at 0. And essentially, each of these values are essentially z scores, because if you're a value of 1, it literally means you're one standard deviation away from this mean over here. So we need to find a critical z value right over here. Let me call that a critical z. We could even say a critical z score or critical z value, so that the probability of getting a z value higher than that is 5%. So that this whole area right here is 5%.