And to figure out this critical z value, we can literally just go to a z table. And we say, OK, the probability of getting a z value less than that is 95%. And that's exactly the number that this gives us, the cumulative probability of getting a value less than that. And so if we just scan this, we're looking for 95%. We have 0.9495, we have 0.9505. So I'll go with this, just to make sure we're a little bit closer. So this z value, and the z value here is 1.6, and the next digit is 5.