Question: You are given PACF for two stationary processes: (a) For time series {Xt, t = 1, 2, . . .} : 11 = 0, 22

You are given PACF for two stationary processes: (a) For time series {Xt, t = 1, 2, . . .} : 11 = 0, 22 = 0.36, kk = 0 for k 3. (b) For time series {Yt, t = 1, 2, . . .} : 11 = 0.7, kk = 0 for k 2. In each case, give an appropriate equation for the corresponding stationary process

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