Winter’s method (with α = 0.2, β = 0.1, and γ = 0.5) is being used to forecast the number of customers served each day by Last National Bank. The bank is open Monday through Friday. At present, the following seasonalities have been estimated: Monday, 0.80; Tuesday, 0.90; Wednesday, 0.95; Thursday, 1.10; Friday, 1.25. A seasonality of 0.80 for Monday means that on a Monday, the number of customers served by the bank tends to be 80% of average. Currently, the base is estimated to be 20 customers, and the trend is estimated to equal 1 customer. After observing that on Monday 30 customers are served by the bank, predict the number of customers to be served by the bank on Wednesday.
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