00:01
There is given a z value here.
00:02
If there's a z value, we have to use the standard normal distribution.
00:06
And for this distribution, we know that the mean, which is denoted by mu, should be zero, and the standard deviation, denoted by sigma, should be one here.
00:16
So i can define the random variable z, which is normally distributed, the mean and the standard deviation.
00:23
So we have to get the area under the normal curve to the right of z is equal to 2 .17.
00:30
Let me draw this shape, and we can easily understand what that means here.
00:33
This is where the z value is zero, and the 2 .17 is here, so we need to get the area of this region.
00:40
So this region can be expressed as the z is greater than, random variable z is greater than 2 .17...