Using simple moving averages and the following time series data, respond to each of the items.   Period Demand 1 104 2 132 3 143 4 137 5 146 6 150 7 101 8 126 9 116 10 115         Click here for the Excel Data File   b. Compute all possible forecasts using a three-period simple moving average model. (Round your answers to 2 decimal places.)   c. Compute the MAD. (Round your answer to 2 decimal places.)   d. What is the forecast demand for period 11?

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