So what is this going to be? So our sample mean is 700, they tell us that. So it's going to be 700 plus or minus, plus or minus. So what would be our critical value for a 95% confidence interval? Well, we will just get out our t-table. And with a t-table, remember, you have to care about degrees of freedom. And if our sample size is 14, then that means you take 14 minus one, so degrees of freedom is n minus one.