The following gives the number of pints of type A blood used at Woodlawn Hospital in the past 4 weeks a) Forecast demand for the week of September 28 using a 2-week moving average (3 point) b) Use a 2-week weighted moving average, with weights of 0.3 and 0.7, using 0.7 for the most recent week Forecast demand for the week of September 28 (3 point) c) compute the forecast for the week of September 28 using exponential smoothing with a forecast for September 21 of 370 and a=0.4 ( 3 point)