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National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: Month Sales (000)Units Feb. 18 Mar. 19 Apr. 10 May. 21 Jun. 20 Jul. 24 Aug. 25 b. Forecast September sales volume using each of the following: (1) A linear trend equation.(Round your intermediate calculations and final answer to 2 decimal places.) Yt thousands (2) A five-month moving average. (Round your answer to 2 decimal places.) Moving average thousands (3) Exponential smoothing with a smoothing constant equal to .40, assuming a March forecast of 17(000). (Round your intermediate calculations and final answer to 2 decimal places.) Forecast thousands