00:01
So in question nine, we're going to refer to some sample data and determine whether they appear to be from a population within normal distribution.
00:09
For the sake of this, we're going to look at normal distribution being in the loose sense that the population need not be exactly normal, but it could just be roughly bell -shaped.
00:19
So we're looking at chocolate chip cookies, and we need to refer back to the dataset 28 in the appendix in the book.
00:28
So in the appendix, it gives us data from 100%.
00:32
170 different chocolate chip cookies, but the data that it gives us are only 25 of those 170 chocolate chip cookies.
00:39
So in order to determine normality for this sake, we're just going to see if it's roughly a bell -shaped symmetrical curve and we're just going to plot the data.
00:49
So looking at the data, we're going to plot the number of chocolate chips in the cookies.
00:57
So we have anywhere between 13 chocolate chips all the way up to 32.
01:10
So we're going to just say 10 to 35.
01:15
I think we can count by fives.
01:27
All right.
01:28
So just plotting the data here.
01:30
We have a 22.
01:34
Another 22.
01:37
24...