00:01
For this problem, we are given the wait time in minutes for 25 tables seated at a particular restaurant.
00:08
They're shown right here.
00:10
And in part a, we are asked to first explain why the times are a population.
00:16
So, the reason why is that we are told in the setup that there are 25 tables seated total.
00:27
And we have data for all 25.
00:35
So it's a population rather than a sample.
00:38
For part b, we're asked to find the mean and median of the times.
00:43
For finding the mean, mu, that would be equal to the sum of the data points, divided by the number of data points.
00:54
So we'll find that the sum of the data points is 1 ,021.
00:58
We divide that by 25, which gives us a mean value of 40 .84.
01:04
Then for the mean, one moment here, for the mean, or excuse me, for the median, rather, what we'll have to do is we'll have to list all of the data points in order, which i'll show on screen here.
01:23
Okay, so i'm going to have to zoom out a little bit so we actually have room to list these out in order.
01:35
Okay, so we would want the data point in the middle, or since we would have 25 minus 1, so 24, half of 24 on either side...