<p>give me examples when you would use a matched t test over a 2 sample proportion test?
I know matched T tests are used when independence cannot be established, but can anyone give me examples other than a before/after scenario where it would be used?</p>
<p>Matched would be like taking a pulse rate before and after exercising; 2-sample would be like taking the pulse of males and females and comparing them. Hope that's what you were looking for.</p>
<p>yea that helps thanks. But if you look at the ap stat test from 2001, number 5, I still don't understand why it's a matched T test.</p>
<p>Here's the link:
<a href="http://apcentral.collegeboard.com/repository/statistics_01.pdf%5B/url%5D">http://apcentral.collegeboard.com/repository/statistics_01.pdf</a></p>
<p>Hmm...dunnom, it actually looks like a 2-sample to me. Did you do that one in class or something? I wish they had the answers online...maybe someone else can help.</p>
<p>A difference of two porportions would be if they picked random samples from all the generic drug makers and all of the non generic drug makers and compared them.
This is giving you more information, saying that we took one from each pharmacy for real and knockoff drugs. They form a pair that way.
Its assuming that the pharmacies trea all their drugs equal. Its similiar to using a paired t - test for gas mpg before and after adding an additive. There is only 1 variable, ideally, the additive, and in this case it is the brand of drug.</p>
<p>Two sample t procedures - matched pairs is what collegeboard calls it.</p>