And given that assumption, figure out if the likelihood of getting data like this or more extreme is really low. And if it is really low, then we will reject the null hypothesis. And in this test, like every hypothesis test, we need a significance level. And let's say our significance level we care about, for whatever reason, is 10% or 0.10. That's the significance level that we care about. Now, to do this, we have to calculate a chi-squared statistic for this contingency table. And to do that, we do it very similar to what we did with the restaurant situation.