What test do I use for C? And how do I prove that the values in y are uncorrelated for B?
Simulate a sequence of 100 iid standard normal random variables, y=rnorm(100).
(a) Use a function in R to plot the sample acf function values of y.
(b) Prove by plots that the sequence of values in y are uncorrelated.
(c) Use a test in R to test that the values of y are uncorrelated.