So that's all that's going on over there. So we're going to be in this column right over here. And which degree of freedom do we use, or degrees of freedom? 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.