A product has the following demand history for the past six months: January.............................. 212 February............................. 201 March................................

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A product has the following demand history for the past six months:
January.............................. 212
February............................. 201
March................................ 242
April................................. 188
May.................................. 198
June.................................. 208
a. Using a four-month moving average, find the July forecast.
b. Using a weighted moving average with weights of 0.50, 0.30, and 0.20, find the July forecast.
c. Using exponential smoothing with a = 0.2 and a June forecast of 196, find the July forecast.
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