00:01
For this question, we are given a normal distribution.
00:04
So in this case, the mean and the standard division was given here.
00:08
So what we have to find? we have to find the points here.
00:12
So let me just drill the picture here.
00:16
This is the picture.
00:17
This is the normal distribution we have.
00:19
So this is the first value, the next value.
00:22
So for the first value, this is the first 10 % of the distribution.
00:29
And so the mean given also here, so the mean which is denoted by a minute.
00:34
This is 81 .1 in the standard deviation.
00:38
This is denoted by sigma, which was given as 11 .1 here.
00:42
So in order to get, let's say this is x1, this is x2, in order to get the x1 here, the area of the left of x1, which is 0 .1.
00:49
So i'm going to use the inverse non -function and the area which is 0 .1.
00:53
That means the 10%.
00:54
So the mean 81 .1 and the standard division, 11 .1.
00:57
11 .1 here...