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 8 9 4 7 13 9 12 13 10 9 8 This exercise contains only parts b, c, and d. 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 7 6.7 8 9.7 11.3 11.3 11.7 10.7 9 c) Using the 3-year weighted moving average with weights 0.10, 0.35, and 0.55, using 0.55 for the most recent period, provide the forecast from periods 4 through 12 (round your responses to two decimal places). Year Forecast 4 5 6 7 8 9 10 11 12