Question: please do fast!! I will rate you good for sure!! Question 3 [10] Prove or disprove the following process is a covariance stationary: z, =

please do fast!! I will rate you good for sure!!

Question 3 [10] Prove or disprove the following process is a covariance stationary: z, = (-1)' A ,where A is a random variable with zero mean and unit variance. please help me with this

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