Q$1)$ Forecast

Use the following three forecast methods to forecast the # of participants for Quarter $1,2020.$

a$)$ Use a $4-$Quarter Moving Average Method

b$)$ Use a Linear Projection Forecast Method.

c$)$ Use an Exponential Smoothing Forecast Method, Assume $=0\mathrm{.}3,$ and an initial forecast for Quarter $4,2011$ is $250.$Data

Charts. Here is the the number of participants and there is in the pic. in the form of table too. $201120122013201420152016201720182019$

Quarter $1354576151195240391330493$

Quarter $2313369366409413503405565589$

Quarter $3265259388338447460396545490$

Quarter $4287405336345442563540609654$