But we don't know that. In fact, we'll assume that she didn't do it with the replacement, and so if you don't do it with the replacement, you can assume rough independence for each observation of a song if this is no more than 10% of the population. And so it looks like it is exactly 10% of the population, so Della just squeezes through on our independence test right over there. So with that out of the way, let's just think about what the confidence interval is going to be. Well, it's going to be her sample proportion, plus or minus, there's going to be some critical value, and this critical value is going to be dictated by our confidence level we wanna have, and then that critical value times the standard deviation of the sampling distribution of the sample proportions, which we don't know. And so instead of having that, we use the standard error of the sample proportion, and in this case, it would be p hat times one minus p hat, all of that over n, our sample size, all of that over 50. So what's this going to be?