National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: Month Sales (000)Units Feb. 16 Mar. 17 Apr. 11 May. 26 Jun. 20 Jul. 20 Aug. 29 b. Forecast September sales volume using each of the following: Round your intermediate calculations and final answer to 2 decimal places.) (2) A five-month moving average. (Round your answer to 2 decimal places.) (3) Exponential smoothing with a smoothing constant equal to .30, assuming a March forecast of 16(000). (Round your intermediate forecast values and final answer to 2 decimal places) (4) The naive approach. (5) A weighted average using .50 for August, .20 for July, and .30 for June. (Round your answer to 2 decimal places.)