Problem 2: The table below shows the demand for a particular brand of razor in a shop for each of the last nine months. Month 1 2 3 4 5 6 7 8 9 Demand 10 12 13 17 15 19 20 21 20 Forecast 12 15 1. Calculate a simple moving average for months three to nine. What would be your forecast for the demand in month ten? 2. Calculate a weighted moving average for months three through none. What would be your forecast for the demand in month ten? o t-1 =.3 O t-2 =.3 O t-3 =.2 O t-4 =.2 3. Apply exponential smoothing with a smoothing constant of 0.5 to generate a forecast for demand for demand in month ten