So now we can actually calculate our interval, because this is going to be 0.617. So if you want 1.96 times that, so we get 1.96 times that.617, I'll just write the answer we just got, so we get 1.21. So this is, this number right here, this number right here is 1.21. So the 95% confidence interval is going to be, is going to be the difference of our means, 1.91 plus or minus this number, 1.21. So what's our confidence interval? If we subtract it, so the low end of our confidence interval, and I'm running out of space, the low end, 1.91 minus 1.21 is just, what is that? That's just.7.