We have 90 minus 94.7 squared divided by 94.7. And let's see what we get. We get 2.528. So let's just say it's 2.53. So our chi-square statistic, I always have trouble saying that, our chi-square statistic, assuming the null hypothesis is correct, is equal to 2.53. Now, the next thing we have to do is figure out the degrees of freedom that we had in calculating this chi-square statistic. And I'll give you the rule of thumb, and I'll give you a little bit of a sense of why this is the rule of thumb for contingency table like this.