Question: Consider the model ( 1 0 . 4 3 B ) ( 1 B ) Z t = a t and the observations Z 4

Consider the model

(10.43B)(1B)Zt=at

and the observations Z49=33.4,Z50=33.9 and a2=2 .

  • What is the eventual forecast function for the forecasts made at time,t= 50?

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