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. 20

Apr. 7

May. 22

Jun. 18

Jul. 24

Aug. 30

a. Forecast September sales volume using each of the following:

(1) The naive approach.

(2) A five-month moving average. (Round your answer to 2 decimal places.)

(3) A weighted average using 0.65 for August, 0.05 for July, and 0.30 for June. (Round your answer to 2 decimal places.)

(4) Exponential smoothing with a smoothing constant equal to 0.20, assuming a March forecast of 14(000). (Round your intermediate forecast values and final answer to 2 decimal places.) (5) A linear trend equation. (Round your intermediate calculations and final answer to 2 decimal places.)