Repeat Exercise 9.6 calculating the sampling distribution of the sample variance.

In exercise 9.6

Refer to Exercise 9.5. 

In exercise 9.5

Repeat the simulation described earlier with the following changes. At step 3, specify 1 for the Number of Variables and 10000 for the Number of Random Numbers. At step 4, change the distribution to Normal and type the Parameters Mean 100 and Standard deviation 20. Calculate the mean and standard deviation of these numbers and draw a histogram. Describe your results.

Create the sampling distribution of the mean from a normal population with mean 100 and standard deviation of 20 and a sample of size 9. Calculate the mean and standard deviation of these numbers and draw a histogram. Compare these results with those in Exercise 9.5.