So to calculate the chi-square statistic, what I'm going to do is, so here we're assuming the owner's distribution is correct. So assuming the owner's distribution was correct, what would have been the expected observed? So we have the expected percentage here, but what would have been the expected observed? So let me write this right here, expected. I'll add another row. Expected. So we would have expected 10% of the total customers in that week to come in on Monday, 10% of the total customers of that week to come in on Tuesday, 15% to come in on Wednesday.