00:01
Hi, i'm david and i'm hitchell hamjan seeing your question.
00:04
Now let me pick up your question here.
00:06
In the question here we are going to discuss about the confidence interval for the proportion.
00:13
Let me remind you that the confidence interval for the p, it will be the point estimate p heart plus and minus the z and 4 over 2, times from the square root of the phe times 1 minus the p heart over the n.
00:28
In this question in this formula, this quantity on the right here it will be called the merging of the error.
00:35
And the formula from the p, heart equal to the x over n.
00:40
In the question here, we are given the sample size n equal to the 85 and the x answer yes equal to the 63.
00:50
Now the first question asked you previously why this symbol certified the center limit theorem.
00:57
This satisfies central limit theorem because the n times b heart times 1 minus the p heart it will equal to first i need to find the p heart here it will equal to the x over n equal to the 63 over 85 and then we get equal to the 0 .7 for 1 so if we compute it we should get n equal to the 85 times under 0 .741 times under 1 minus 0 .741 and then we get equal to times 85 equal to the 16 point 3 and it's greater than 10...