. Dixon Glass manufactures mason jars for use in home canning. Quarterly sales for this division (in millions of dollars) over the past five years are as follows (year 5 is the most recent year):...

. Dixon Glass manufactures mason jars for use in home canning. Quarterly sales for this division (in millions of dollars) over the past five years are as follows (year 5 is the most recent year):

Dixon management believes that an additive model incorporating seasonality is appropriate for forecasting upcoming quarterly sales. Using the multiple regression approach, forecast quarterly sales for year 6 .