00:01
For this question, let me take notes what values are given here.
00:03
First of all, the sample size, which is given as 964, and the x value given here, which is 540, and the confidence level, which is 95%, we can write as 0 .95.
00:15
So, what we have to calculate here, we have to find the confidence interval for the population proportion.
00:21
First of all, we need the sample proportion, which is denoted by p hat, this is x over n, 540 divided by 964.
00:29
So, this is 540 divided by 964.
00:33
So, the value would be 0 .56t.
00:37
Here we go.
00:39
Just directly, just write 0 .56.
00:42
Remember the formula, the confidence interval for proportion, which is the p hat plus or minus the z value times the let's get the z value first.
00:56
So, the alpha is 1 minus confidence level, but we need alpha over 2, 1 minus 0 .95 divided by 2, which would be 0 .025.
01:04
To get the z value, i'm going to use the graphing display calculator application at this step, which is the inverse norm...