Question What effect did the smoothing constant have on the forecast for CoolMan air conditioners? (See Problems 5-21 and 5-22.) Which smoothing constant gives the most accurate forecast? Reference Problem 5-22: Using smoothing constants of 0.6 and 0.9, develop forecasts for the sales of CoolMan air conditioners (see Problem 5-21). Reference Problem 5-21: Sales of Cool-Man air conditioners have grown steadily during the past 5 years: YEAR SALES l 450 2 495 3 518 4 563 5 584 6 ? The sales manager had predicted, before the business started, that year 1's sales would be 410 air conditioners. Using exponential smoothing with a weight of or = 0.30, develop forecasts for years 2 through 6. Answer Step 1 By definition, using exponential smoothing with smoothing constant= 0-5 Ill 0-9, the formula is given by New m = \"paid! haul +a[IpaiuhdaIpelilhl) Then applying the formula of exponential smoothing method, obtain the following table, where 101', denote the last period's forecast at time t, and Flu! denote the new forecast at fin-In