right, so normally we, you know, we want to be reasonably confident, right, so we want to have a reasonably small significance level  we don't want that significance level to be too small, otherwise the power of the test will diminish very rapidly   so we normally use the ten or the five percent, five percent level and if you just look at the er the five percent column, right, overall realistic sample sizes, right, from a hundred and twenty down to, to about twenty, i, those t ratios were the critical value they are all about two and that's why we say you can have a t ratio of about greater than two, then you can be at least ninety five percent confident about your inference.