That's if this numerator is much bigger than this denominator over here. So that would make us believe, that should make us believe, that there is a difference in the true population mean. So if this number is really big, it should tell us that there's a lower probability that our null hypothesis is correct. If this number is really small, let's say that this is larger, let's say that our denominator is larger, that means that our variation within each sample makes up more of the total variation than our variation between the samples. So that means that our variation within each of these samples is a bigger percentage of the total variation versus the variation between the samples. So that would make us believe that, hey, any difference that we actually see in the means is probably just random. And that would make it maybe a little harder to reject our null hypothesis.