00:01
So we have two polls for a presidential candidate.
00:04
Poll x and pole y.
00:09
Now, x is 48 % of the vote.
00:15
Pole y predicts 56 % of the vote.
00:18
They both have a margin of error 5%.
00:21
So plus minus 5%.
00:23
So first thing i'm going to do is rewrite these in another form, with a lower and upper bound.
00:31
So if you subtract the margin of error, you get the lower bound.
00:34
So here, 43%.
00:36
If you add it, you get the upper bound, 52%.
00:40
Doing the same here, we get between 51 % and 61%.
00:47
So the first thing i can say is that the intervals, that is not correct, so...
00:55
Oops, 53%.
00:57
First thing i can say is that the intervals overlap, which means that these poles are...
01:06
Consistent with each other.
01:10
If they didn't overlap, i would be a whole bit confused...