qua-44\"; uu um I Ivvuwnu' Using simple moving averages and the following time series data, respond to each of the items. Period Demand 1 130 122 121 112 141 2 3 4 5 6 105 7 116 8 118 9 142 10 127 b. Compute all possible forecasts using a six-period simple moving average model. (Round your answers to 1 decimal place.) Period Demand 6-period SMA 1 130 ? 2 122 ? 3 121 ? 4 112 ? 5 141 ? 6 105 ? 7 116 ? 8 118 ? 9 142 ? 10 127 ? 11 ? c. Compute the MAD. (Round your answer to 1 decimal place.) MAD=? d. What is the forecast demand for period 11? (Round your answer to 1 decimal place.) The forecast demand for period 11 is ? e. What is the error associated with the eleventh-period forecast? (Round your answer to 1 decimal place.) Error associated with the eleventh-period forecast = ? Absolute Error