[Steps Shown] An appliance repair shop owner has fitted the quadratic trend equation y bar = 90 + 0.9 x + 3 x 2 to a time series of annual repair orders, with
Question: An appliance repair shop owner has fitted the quadratic trend equation y bar = 90 + 0.9 x + 3 x 2 to a time series of annual repair orders, with y = the number of repair orders and x = 1 for 2000. Forecast the number of repair orders for 2008; for 2010.
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[All Steps] For the data below, use the weighting constant = 0.5
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