00:01
For this problem, we know that we have 22 randomly selected students.
00:04
So we have n is equal to 22.
00:07
We are looking for the probability of the mean time, x -bar, not more than 5 hours.
00:19
So x -bar less than or equal to 5.
00:22
And we're asked to shade the normal curve to indicate the correct area.
00:27
So one thing that i'll note here is that we'd need a standard deviation in order to actually calculate this out.
00:36
So one thing that i'll do, i'll sort of sketch this out first, pretend that that's symmetric.
00:43
Actually, you know what what i'll do is i'll just shave that in half and then use some computer magic.
00:50
One second here, copy paste, and i believe, yes, horizontally.
00:55
Okay, okay, so there we have our perfectly symmetric distribution.
01:00
We're asked to shade the given normal curve to indicate the correct area.
01:05
So, yeah, we have a few things that i need in order to answer this fully.
01:09
One moment...