a) The forecast for weeks 2 through 10 using exponential smoothing with =0.50 and a week 1 initial forecast of 20.0 are (round your responses to tw decimal places): b) For the forecast developed using exponential smoothing (=0.50 and initial forecast 20.0), the MAD = sales (round your response to two decimal places). c) For the forecast developed using exponential smoothing (=0.50 and initial forecast 20.0), the tracking signal = (round your response to two decimal places)