00:01
What you're looking at is the empirical rule of 68 95.
00:13
I'll just double check that it's 99 .7, but you don't actually need to know the 99 .7.
00:20
And what this is, is if you're looking at a normal distribution, which is what it says with a mean of 50, i'll go ahead and put a mean of 50 in here, and a standard deviation of 8.
00:32
So going up eight, we get you to 58, but we actually don't care about that number.
00:37
We want to go down.
00:38
So subtracting eight from 50 takes me down to 42, and then you subtract another eight, and we're at 36, 34, excuse me, which is exactly what we wanted...