00:01
Hey there, welcome to numerin.
00:04
So we have a professor doing a new method over here, new teaching method, who wants to see if a new method enhances the conceptual understanding of his or her students.
00:18
So we're giving a random sample of 35, and we have two categories where it's before a new method and after new method.
00:28
So with that, there's differences of the pre -imposed test scores.
00:34
And we're given the mean and standard variation of those differences.
00:39
So let's state our null and alternative hypothesis first.
00:44
H -nol and h -a.
00:47
So for h -a is basically our claim.
00:50
So you want to see that the newtation method enhances.
00:54
So when we have m -1, which is pre -test.
01:02
Minus mu 2 which is after pre -test so since the pre is lower in and d after it's going to be let's see it's going to be less than zero right meaning that our alternative hypothesis will basically equal is basically equal mu d and write that larger mu d is less than zero.
01:39
So that's what we should have.
01:41
And same therefore are no hypothesis...