D 10 1 6 2 9 3 5 4 9 5 13 6 8 T 13 8 12 O 11 6 The following table shows the actual demand observed over the last 11 years Year Demand This exerciso contains only ports b, c, and d b) Using the 3-year moving average, provide the forecast from periods 4 through 12 fround your responses to one decimal place). Year 46 Forecast 6.7 7.7 9 o 9 7 10 8 113 10 11 12 11.3 10.7 8.7 11 c) Using the 3-year weighted moving average with weights 0.20 0.30, and 0.50, using 0.50 for the most recent period, provide the forecast from periods through 12 (round your responses to two decimal placed Year 6 7 9 10 12 Forecast 4 5 B 11