Hi, could anyone help me with the following question: Calculate E(y(t)) and Var(y(t)) for the model, y(t) = e(t) + B(2)e(t-2) please note that B(2) in the model is just Beta_2. The answer for the question is E(y(t)) = 0 and Var(y(t)) = (1 + B(2)^2)sigma^2 but i don't know how to get to this answer. Please could someone offer me assistance. Thank you in advance.
