National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: SalesMonth(000)UnitsFeb.19Mar.22Apr.8May.24Jun.19Jul.27Aug .22b. Forecast September sales volume using each of the following: (1) A linear trend equation. (2) A five-month moving average. (3) Exponential smoothing with a smoothing constant equal to .25, assuming a March forecast of 17(000). (4) The naive approach. (5) A weighted average using .50 for August, .15 for July, and.35 for June.