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State for each of the following model whether it is

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Let et~ WN(0,2). State for each of the following model whether it is stationary and whether it is invertible. Explain your answer. a) Zt= 1+ 0.5Zt-1 + et, t=1,2.3.... b) Zt= et - 1.5et-1 + 0.5et-2, t=1,2,3,

Reference no: EM13261520

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