So first we can just figure out how far is 65 from the mean, let me just draw one chart here that we could use the entire time. So if this is our distribution, let's see, we have a mean of 81. So we have a mean of 81, that's our mean. And then a standard deviation of 6.3. So our distribution, they're telling us that it's normally distributed, so I can draw a nice bell curve here. They're saying that it's normally distributed, so that's as good of a bell curve as I'm capable of drawing. This is the mean right there at 81.