Simple exponential smoothing with α = 0.3 is being used to predict sales of radios at Lowland Appliance. Predictions are made on a monthly basis. After observing August radio sales, the forecast for...

Simple exponential smoothing with α = 0.3 is being used to predict sales of radios at Lowland Appliance. Predictions are made on a monthly basis. After observing August radio sales, the forecast for September is 100 radios.

a During September, 120 radios are sold. After observing September sales, what is the prediction for October radio sales? For November radio sales?

b It turns out that June sales were recorded as 10 radios. Actually, however, 100 radios were sold in June. After correcting for this error, what would be the prediction for October radio sales?