00:01
In this question, the sample size was given as 2347.
00:05
Let me take notes.
00:06
Which is denoted by n, the sample size, 2347.
00:11
And the number of people who just, who sat, they have watched digitally streamed tv programming, which is denoted by x, this is 549.
00:23
And the confidence level for this question, which was given as 99%, so we can write that 0 .99.
00:28
And we have to find the confidence interval for the proportion.
00:31
First of all, we need the sample mean, i mean sample proportion, sorry.
00:36
Let's denote this sample proportion by the p -hat, which is x over n.
00:41
So this is 549 divided by 2347.
00:46
549, and this is divided by 2347.
00:53
So the value here, which is 0 .23 and 4.
00:57
And the next step, remember the formula, the confidence interval for the proportion, which is the sample proportion p -hat plus or minus the z value, n times the square root of, this is p -hat times 1 minus p -hat, and divided by the sample size.
01:13
This is the formula...
