00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
Now let me bring up your question here.
00:06
In the question here, we are going to discuss about the central limit theorem.
00:11
Let me remind you that if we have the x that follows some distribution with the mean one and the standard deviation, and then the same mean x -bile will be approximately to the normal.
00:21
In such a way that if we think the x -bar will minus the mean of a standard deviation, the bottom -score -n, we obtain the standard normal.
00:29
And also it will discuss about the exponential, it will have the x followed by exponential, with the mean equal to the beta, and then we have the mule equal to the beta, and the standard division equal to the beta itself as well.
00:48
Now in this question we're given the x, it will be the delivery time followed by the exponential, when the mean equal to the 2 bond -6.
00:59
Days and therefore we can find the meal equal to the 2 .63 and also the standard division equal to the 2 .63 as well and from here we have the sample size and equal to the 119...