00:01
Hello.
00:03
So in this question we've been given a normal distribution with a variance 10 ,000.
00:10
So from the variance, we can get the standard division, which is square root of that.
00:23
So we're going to get 100.
00:29
We have the mean to be 1 ,400.
00:31
We want to find the probability between 1539 and 1580.
00:46
So for normal distribution, we're going to do 15 .39 minus 1 ,400 divided by 100.
01:10
Here we have x minus mu over standard division.
01:16
Here we have 15.
01:18
Oops, there's a second.
01:21
1580 minus 1 ,400 divided by 100.
01:30
So now let's see where we get for this ad.
01:42
So we have 1539 minus 1 ,400.
01:51
So this is going to be 1 .39.
01:56
This is z...