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1823统计中等derivationmedium

AR(1) Multi-Step Forecast 3

题目

A signal follows X_t = -1 + 0.8 X_(t-1) + e_t with Var(e_t) = 1 and current value X_t = 3. What is the h = 4 step forecast E[X_(t+4) | X_t]?

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