00:01
So for this problem that you needed help with, i did simulate this.
00:07
I did cut up 90 small pieces of paper.
00:09
I wrote numbers 1 through 9 on them.
00:12
Put them in a bowl and mix them up.
00:13
And so part a wants you to take out a slip, write the number down on it, put it back, do it 20 times, figure out the mean and the variance of the results.
00:23
So for the mean, for a, the mean, is if i do the average and then so that's the mean and then the variance variance and so for the variance insert the function and then i'm going to highlight the numbers and then that's the variance and then for the next part it says part b when you take out the two slips figure out the mean right it down, put the slips back, repeat this process 20 times, and then make a histogram, then figure out the mean and the variance of this distribution.
01:20
So for part b, for the mean, oops, let me just get the average, and that's the average.
01:34
Then for the variance, for the variance, and insert the function, and then i just got to highlight that and then highlight the numbers, and that's the variance.
01:49
Now, as far as the history, if i highlight all these numbers and i insert a histogram, that is what the histogram looks like for b...