National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: Month Sales (000)Units Feb- 20 Mar- 16 Apr- 13 May-24 Jun- 20 Jul-21 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 19(000). (Round your intermediate forecast values and final answer to 2 decimal places) Forecast thousands (4) The naive approach. Naive approach thousands (5) A weighted average using .60 for August, .10 for July, and .30 for June. (Round your answer to 2 decimal places.) Weighted average thousands.