And then what we would do in this, what Rory would do, is then look this t-value up on a t-table and say, so if you look at a distribution of a t-statistic, something like that, and say, okay, we are negative 2.5 below the mean. So negative, negative 2.5. And so what he would wanna do is figure out this area here, because this would be the probability of being that far below the mean or even further below the mean. And so that would give us our p-value. And then if that p-value is below some preset significance level that Rory should have set, maybe 5% or 1%, then he'll reject the null hypothesis, which would suggest his suspicion that the true mean of years of experience for the teachers in his district is less than five. Now another really important thing to keep in mind is, they told us that assume all conditions for inference have been met. And so that's the, assuming that this was truly a random sample, that each, the individual observations are either truly independent or roughly independent, that maybe he observed either with replacement or it's less than 10% of the population, and he feels good that the sampling distribution is going to be roughly normal.