00:01
So we have a normal distribution with a mean of 1570 and a standard deviation of 230, 260, and so on.
00:15
And it says, what percentage is between 1340? i'm going to go ahead and finish it out since it wants to seize the empirical rule.
00:24
Minus 230.
00:27
1340.
00:30
One standard deviation down, 1110.
00:34
And 880.
00:37
So between 1340 and 1 ,800, that is plus and minus one standard deviation.
00:48
So the empirical rule tells us that's going to be 68%.
00:51
Remember, our empirical rule is 68, 95, 997.
00:55
Part b, what percentage of rents are less than 1340? all right, well, i know that since this, what we did before is 68%, this one's going to be 34, and this one's going to be 34...