Question: 3. Consider the following non-stationary process: Yt = Yo + Vit + ut, with ut = put-1 + Et and ezi.i.d. d. 02. Indicate (with

 3. Consider the following non-stationary process: Yt = Yo + Vit

3. Consider the following non-stationary process: Yt = Yo + Vit + ut, with ut = put-1 + Et and ezi.i.d. d. 02. Indicate (with explanation) the source(s) of non-stationarity of y. Show that you can rewrite the model as: Ayt = Bo + Bit + B2Yt-1 + Et. Clearly indicate the one-to-one relation between (70, 71,p) and (Bo,B1,B2). What name do we give the non-stationary process yt when p= 1? Briefly indicate how to test whether this is the case. (8 marks) 3. Consider the following non-stationary process: Yt = Yo + Vit + ut, with ut = put-1 + Et and ezi.i.d. d. 02. Indicate (with explanation) the source(s) of non-stationarity of y. Show that you can rewrite the model as: Ayt = Bo + Bit + B2Yt-1 + Et. Clearly indicate the one-to-one relation between (70, 71,p) and (Bo,B1,B2). What name do we give the non-stationary process yt when p= 1? Briefly indicate how to test whether this is the case. (8 marks)

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