Question #2 9 marks Suppose demand for a spare part for last 14 periods is: Period X, 0 1-5 6 2 0 1 7 2 8-13 14 4 marks a) Use the above data to initialize (i.e., compute 214 and4) in Croston's model. What is your (ex-post) forecast for period 15 as of end of period 14? For period 16 as of end of period 14? Assume that the size of demand in period 0 was non-zero. 5 marks b) Suppose the next non-zero demand occurred in period 17 and its magnitude is 2 units. Using a = 0.4, apply Croston's model through periods 15, 16 and 17 (i.e., compute Ziz and n ): What is your forecast for period 18 as of end of period 17? Question #2 9 marks Suppose demand for a spare part for last 14 periods is: Period X, 0 1-5 6 2 0 1 7 2 8-13 14 4 marks a) Use the above data to initialize (i.e., compute 214 and4) in Croston's model. What is your (ex-post) forecast for period 15 as of end of period 14? For period 16 as of end of period 14? Assume that the size of demand in period 0 was non-zero. 5 marks b) Suppose the next non-zero demand occurred in period 17 and its magnitude is 2 units. Using a = 0.4, apply Croston's model through periods 15, 16 and 17 (i.e., compute Ziz and n ): What is your forecast for period 18 as of end of period 17