National Scan, Inc., sells radio frequency Inventory tags. Monthly sales for a seven-month period were as follows: Sales (eee)Units Month Feb. 17 Mar. 20 Apr. 12 May. 22 Jun. 19 Jul. 24 Aug- 26 Click here for the Excel Data File a. Forecast September sales volume using each of the following: (1) The naive approach. Answer is complete and correct. Naive approach 26 thousands (2) A five-month moving average. (Round your answer to 2 decimal places.) Moving average thousands (3) A weighted average using 0.60 for August, 0.10 for July, and 0.30 for June. (Round your answer to 2 decimal places.) Weighted average thousands (4) Exponential smoothing with a smoothing constant equal to 0.20, assuming a March forecast of 16(000). (Round your Intermediate forecast values and final answer to 2 decimal places.) Forecast thousands