The following table shows the actual demand observed over the last 11 years. Year 1 2 3 4 5 6 7 8 9 10 11 Demand 7 9 5 9 13 8 12 13 9 11 7 This exercise contains only parts D,C, and d b) Using the 3-year moving average, provide the forecast from penods 4 through 12 (round your responses to one docimal place) Forecast d) Mean approach using the