Question 3. a) Using nave method, what will be the forecasted sale for the month of June? b) Using 3-months moving average (n=3), what will be the forecasted sale for the month of June? Forecast Month January February March April May June Sales 125,000 93,000 80,000 75,000 84.000 June sales? Question 4. Using Single or Simple exponential smoothing (SES) technique, what will be the forecasted sale for the month of June? Please see the example in the excel sheet. F., = F + a(A -F) 1 t F:+1 = Forecast value for time t+1 = Actual value at time t = Smoothing constant ac Considering the smoothing constant a = 0.5, Initial forecast = 124,000 Forecast Month January February March April May June Actual Sales USD 125.000 93,000 80,000 75,000 84,000 June sales