The following table shows the actual demand observed over the last 11 years: Year 1. 2 3 4 5. 6 8. 9. 10 11 Demand 10 6. 6. 13 7 11 13 11 6. This exercise contains only parts b, c, and d. b) Using the 3-year moving average, provide the forecast from periode 4 through 12 (round your responses to one decimal place). Year 4 6 7 9. 10 11 12 Forecast Enter your answer in each of the answer boxes. Forecast c) Using the 3-year weighted moving average with weights 0.15, 0.35, and 0.50, using 0.50 for the most recent period, provide the forecast from periods 4 through 12 (round your responses to two decimal places). Year 4 10 11 12 Forecast d) Mean abnolute deviation for the forecast developed using the 3-year moving average is 2.33 and for the 3-year weighted moving average is 2.74. Based on his information, the better forucast is achieved using the Vapproach. Enter your arwwer in each ot 3-year moving average weighted moving average