00:01
So for your problem, you want to find out if the mean is equal to 14 days or as they think that it is less than 14 days or less than 2 weeks.
00:11
Now you have some data that you can view, but i can't see those.
00:15
So we have an x bar, a sample standard deviation, and an n that you're going to need to find.
00:22
And then you will want to compute that test statistic and you can enter that data into excel or into a calculator and do a t -test.
00:33
And that will give you your test statistic which will have n minus 1 degrees of freedom.
00:38
And yes, it will be calculated by taking x bar minus 14 divided by that sample standard deviation over the square root of n.
00:45
And that will be your test statistic.
00:47
And then your p value, you need that as well.
00:52
I'm going to quick look back at your screen...