00:01
So in my calculator, i'm using a ti83.
00:03
I entered the male rating by the female, and then i entered the female rating by the male.
00:11
And then in my list three, i will describe that as the difference, because these are pairs of dates on the speed dating.
00:21
And i took the male minus the female.
00:23
So the male rating by the female minus the female rating, female rating by the male, female rating by the male.
00:31
And we find that we will be assuming that the mean difference is equal to zero.
00:38
And alternately, that the difference is, there is just a difference, not saying that one rate's higher than the other, but that they are higher.
00:46
And the claim is that there is a difference.
00:49
Test the claim so that this is what they're actually claiming, that there is a difference.
00:54
So our test statistic is a t value, and we will have 11 degrees of freedom, since our sample size is 12.
01:02
And our x bar is negative 0 .203, it's actually repeating, minus the mean we're assuming.
01:11
And then the sample standard deviation is 2 .1686, divided by the square root of 12...