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The following chart shows the pints of Type B blood used at a hospital in the pa

ID: 408765 • Letter: T

Question

The following chart shows the pints of Type B blood used at a hospital in the past 6 weeks.

WEEK OF PINTS USED

August 31 360

Sept. 7 389

Sept. 14 410

Sept. 21 381

Sept. 28 368

October 5 374

a. Forecast demand for the weekof October 12 using a 3-week moving average.

b. Using a 3 week weighted moving average, with weights 9of .1, .3, and .6, using .6 for the most recent week. Forecast demand for the week of October 12.

c. Compute the forecast for the week of Oct 12, using exponential smoothing with a forecast for August 31 of 360, and a =.2 (It's not really a, but I don't remember what the symbol represents that looks like a cursive-type small a.) Sorry

Explanation / Answer

a. estimated demand based on 3 week moving average= (374+368+381)/3= 374 units

b. based on weighted moving average= 0.6*374+0.3*368+0.1*381= 224.4+110.4+38.1= 372.9 (373)

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