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