4.1 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) Forecast the demand for the week of October 12 using a 3-week moving average.

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