R or RStudio Question:

1.21 - If you can help with the R Code to solve the following question in my Stats Class, it would be greatly appreciated. Again, need R code to solve...not handwritten math. First image has question. The question also references a couple of hints/examples of previous sections in the book. I have posted those, as well. *There is no other dataset/information given for this question.

ple 1.9 121 (a) Simulate a series of n = 500 moving average observations as in E and compute the sample ACF, (h), to lag 20. Compare the sample ACF you obtain to the actual ACF, (h). Recall Example 1.20.] (b) Repeat part (a) using only n = 50, How does changing n affect the results