Jane White has recorded the following sales figures for last year for her business: January, $35,645; February, $35,456;...
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Jane White has recorded the following sales figures for last year for her business: January, $35,645; February, $35,456; March, $31,270; April, $32,129; May, $34,456; June, $35,256; July, $36,218; August, $35,456; September, $34,250; October, $32,156; November, $30,125; and December, $32,275. She wants to select from one of three models: a three-month moving average, a weighted moving average (she believes that the weights should be 0.2, 0.3, and 0.5), and an exponential smoothing average in which she uses an alpha of 0.2 and an assumed forecast for January of year one of $35,000.