United Dairies, Inc., supplies milk to several independent grocers throughout Dade County, Florida. Management wants to develop a forecast of the number of half-gallons of milk sold per week. Sales...

United Dairies, Inc., supplies milk to several independent grocers throughout Dade County, Florida. Management wants to develop a forecast of the number of half-gallons of milk sold per week. Sales data (in units) for the past 12 weeks are as follows:





Use exponential smoothing, with a = 0.4, to develop a forecast of demand for week13.