00:01
So, here the question is to construct a 95 % confidence interval for the population average, right.
00:08
So, here the first part of the question is to tell that what is the point estimate.
00:13
So, the point estimate here is the sample mean which is 3 .28, right.
00:18
Now, for the next part we have been asked to compute the value of the standard error.
00:23
So, the standard error is computed as the standard deviation divided by square root of sample size.
00:29
So, the standard deviation here is 1 .33 and the sample size is 536.
00:35
So, this is equal to 1 .33 upon square root of 536 that is 0 .057.
00:43
Now, the next part is here to construct our confidence interval.
00:50
So, the confidence interval here is computed by the formula, okay...