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show all work 3. Assume that we have a time series following Xi = 0.5 +5tWe where we are independent noises following N(0,1). Is the

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3. Assume that we have a time series following Xi = 0.5 +5tWe where we are independent noises following N(0,1). Is the time series X, weakly stationary? Show proof. (3 points)

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