Question: Simple exponential smoothing with = 0.3 is being used to forecast sales of SLR (single lens reflex) cameras at an appliance store. Forecasts are

Simple exponential smoothing with α = 0.3 is being used to forecast sales of SLR (single lens reflex) cameras at an appliance store. Forecasts are made on a monthly basis. After August camera sales are observed, the forecast for September is 100 cameras.
a. During September, 120 cameras are sold. After observing September sales, what is the forecast for October camera sales? What is the forecast for November camera sales?
b. It turns out that June sales were recorded as 10 cameras. Actually, however, 100 cameras were sold in June. After correcting for this error, what is the forecast for October camera sales?

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