Well, it's gonna be four degrees of freedom. Our sample size is five, five minus one is four. So this is going to be our critical value, 2.776. So we have 2.776 as our critical value, and then times our sample standard deviation, well, the sample standard deviation for our difference is right over here is 1.64. And then we're going to divide that by the square root of our sample size. So the square root of our sample size, we already wrote a five in there. Sometimes I just write an N there.