National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows:

Month Sales Units

Feb. 16

Mar. 19

Apr. 13

May. 21

Jun. 22

Jul. 24

Aug. 28

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 .30, assuming a March forecast of 18(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 .65 for August, .15 for July, and .20 for June. (Round your answer to 2 decimal places.)

Weighted average thousands