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

$\backslash$table$[[$Sales$,],[$Month$,(000)$ Units$],[$Feb$.,12],[$Mar$.,22],[$Apr$.,9],[$May$.,24],[$Jun$.,19],[$Jul$.,27],[$Aug$.,24]]$

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 $\mathrm{.}10,$ assuming a March forecast of $15(000).($Round your intermediate forecast values and final answer to $2$ decimal places$)$

Forecast thousands

$(4)$ The naive approach.

Naive approach thousands