00:01
For this problem, we want to find the area under the standard normal curve to the right of z equals 1.
00:07
So let's just remind ourselves, this is the standard normal curve.
00:12
So it has mean mu of 0.
00:15
It has standard deviation sigma of 1.
00:18
And we're interested in calculating the probability that z is greater than or equal to 1, because we want the area to the right of 1.
00:31
So just as a visual, here is a normal curve drawn.
00:37
The mean mu, which is zero, is in the middle here.
00:43
And let's say one is over here.
00:46
Then we're interested in the area to the right of one.
00:49
That is all of this.
00:51
So if we treat z as a random variable with this distribution, then we want the probability that z is greater than are equal to one.
00:59
Okay.
01:01
And there are many ways you can do this...