00:01
All right, so the difference in a two sample test.
00:06
So a two sample test is typically testing if the mean of the first group is equal to the mean of the second group, or if we have evidence of one of those options.
00:24
So we're testing, we're assuming that the two groups we're interested in are equal.
00:37
Or if we're looking at proportional data, sort of the same thing.
00:42
So we assume the two groups are equal, and we see if we have significant evidence of them not being equal, less than, or greater than, depending on which direction we want to go.
01:08
And a two -sided test is just where we're looking for evidence.
01:16
Of two things being different.
01:20
So then on our normal curve, we would shade, our rejection region has both tails.
01:29
It's both tails that we're including.
01:31
It is absolutely legitimate to do a one -sided test with a two sample test...