00:01
So they want to know with the show 60 minutes, which has been on for many, many years, that is the proportion of viewing less than 20%.
00:12
And we'll actually assume that it's equal to 20%.
00:16
And they said that they had a share of 15, which was 15 % of the 5 ,000 viewers, and that were in the poll.
00:27
And that means that 750 people out of 5 ,000 we're actually watching it.
00:33
That's our p -half.
00:34
So our z value will be that 0 .15 minus 0 .2, divided by the square root of 0 .2 times 0 .8, and then divided by that sample size of 5 ,000.
00:48
And that z value comes out to be a negative 8 .839.
00:55
And the p value associated with that is tiny.
01:03
It is only, well, my calculator won't even measure it...