00:01
Okay, so if we're talking about the high requirements are changed to exclude only the tallest 50 % of men.
00:08
So it says that we're normally distributed here.
00:10
So let's go ahead and draw this normal curve for men.
00:14
So right in the middle is 50 % or a mean of 67 .8.
00:24
So 50 % of men are taller than 67 .8.
00:28
50 % in the men are shorter than 67 .8.
00:31
So that's 5050.
00:32
So if you're going to exclude the tallest 50%, we're excluding this, anything from here up.
00:40
So the maximum, seems like that would be the maximum, is 67 .8 inches.
00:53
What's the minimum? well, exclude only the tallest 50%, and the shortest 5%.
01:02
So out here where 5 % is, if that's 5%, we want to exclude those people too.
01:15
So what number comes up here at the 5 % mark? well, looks like we're going to change.
01:23
We're going to convert a percent to a z score and then a z score to the inches.
01:30
So that's how we're going to do this.
01:32
So i want to convert this percent under this curve here.
01:36
That's like a fifth percentile...