Please explain how to use the processes in four to prove the answer in question three. I already have the answer to question three, which is

?q+1q?h+1?ifh?q? , ?0ifh>q?. Thank you!

4. Recall that {X} is a linear random process if it can be written as Xt = 1 + vjet- j - OO where _ _ lil 0. Use this result to verify that of the previous problem. Also, what does this imply for h > p if Xt = u + Chovjet-; where p is finite?3. Let {et} be an iid normal(0, o2) process. Show the ACF for the MA(q) {X } process given by q Xt = et- k 9+1 k=0 is q+1-h q+1 for h E {0, ..., q}, p (h) = 0 for h &gt