And then the total people here are 380. Both this column and this row should add up to 380. So with that out of the way, let's think about how we can use this information in the contingency table and our knowledge of the chi-squared distribution to come up with some conclusion. So let's just make a null hypothesis. Our null hypothesis is that the herbs do nothing. Let me get some space here. So let's assume the null hypothesis that the herbs do nothing.