You are a manager at Asda. You have been given the demand data for the past 10 weeks for swim rings for children. You decide to run three different types of forecasting methods on the data to see which gives you best forecast. If you were to use exponential smoothing with alpha -.3, what would be your forecast for week 22? (The forecast for week 21 was 1272.) Week Demand 12 1317 13 1307 14 1261 15 1258 16 1267 17 1256 1268 18 1277 19 1277 20 1297 21