Shepherd Dairies, Inc., supplies milk to several independent grocers throughout Jefferson County, West Virginia. Managers at Shepherd Dairies want to develop a forecast of the number of half gallons of milk sold per week. Sales data for the past $12$ weeks are in the Lab $2$ dataset. Your task is the following:a$.$ Construct a time series plot. What type of pattern exists in the data?b$.$ Use exponential smoothing with a damping factor of $0\mathrm{.}6$ to develop a forecast of demand for week $13.$