00:01
There is a normal distribution here and the mean is given as 10 and the standard deviation is 1 .8.
00:07
So let's take a note.
00:10
So the mean, which is mu, that is 10 and the standard deviation is 1 .8.
00:17
Let's say x is the random variable and normally distributed.
00:21
That is 10 and 1 .8.
00:24
So what we have to find, find the percentage of cats would have mass more than 12 kilograms.
00:30
So in the first part we have to find the x is greater than 12 and we need the percentage.
00:38
And okay, so this is let's say part a.
00:40
If i draw the bell shape here, so the mu is 10 and x is 12 here.
00:49
So we have to get the area of this region here.
00:53
So the probability of getting x is greater than 12.
00:57
So we have to use the normal cdf.
01:01
Let me just show.
01:03
So from the calculator, just press the button second and then distribution.
01:08
There is normal cdf here.
01:10
So the lower boundary is 12 and comma.
01:13
The upper boundary is there is no in upper boundary.
01:15
We have to put the infinity.
01:17
So 1e99, that means the infinity, comma, and the mean value is given us 10, and the standard division is 1 .8...