Exercise F+ = FI_ 1 + a(At-1 - Ft-1) The following gives the number of pints of type B blood used at Woodlawn Hospital in the past 6 weeks: WEEK OF PINTS USED August 31 360 September 7 389 September 14 410 September 21 381 September 28 368 October 5 374 a) Use a 3-week weighted moving average, with weights of . 1, .3, and .6, using .6 for the most recent week. Forecast demand for the week of October 12. b) Compute the forecast for the week of October 12 using exponential smoothing with a forecast for August 31 of 360 and a = .2. c) Use MAD to compare the accuracy of each method