00:01
For this question, it is given that the value is symmetric with the mean.
00:06
So that means this is a normal distribution here.
00:10
And the given me value is 24 .6.
00:14
And the standard deviation that was given as the standard deviation is 11 .2.
00:20
And the number of cars here, which is 30.
00:24
So for the first of all, we have to find the standard deviation for an is equal 30.
00:29
So the standard deviation for x, which is the standard deviation divided by the radical n, this is the central limit theorem.
00:37
And so this is 11 .2 divided by which is radical 30.
00:43
And we will get the value here 2 .04.
00:49
So this is the standard deviation for n is equal 30.
00:53
So what we have to do, we have to just, so we have to look at the probability when x is greater than 30.
01:00
And x is the random variable normally distributed.
01:03
So the mu value is the same with the population mean, which is 24 .6, and the standard division is 0 .0 point, 2 .04.
01:14
First of all, let me just draw the bell shape.
01:20
And here is the mu, which is 24 .6.
01:24
So the given x value is 30, so 30 is right over here.
01:29
Let's say this is 0 .6.
01:30
So the 30 is here...