Question: Suppose Y t = 5 + 2t + X t where {X t } is a zero-mean stationary series with authoritarian function k a.)

Suppose Y t = 5 + 2t + X t where {X t } is a zero-mean stationary series with authoritarian function γ k

a.) Find the mean function for {Y t }

b.) Find the autocovariance function for {Y t }

c.) Is {Y t } stationary? Why or why not?

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