Suppose that you work for a U$.$S$.$ senator who is contemplating writing a bill that would put a national sales tax in place. Because the tax would be levied on the sales revenue of retail stores, the senator has asked you to prepare a forecast of retail store sales for year $8,$ based on data from year $1$ through year $7.$ The data are:Use the naive forecasting model presented in this chapter to prepare a forecast of retail store sales for each year from $2$ through $8,$ how much is the forecast for year $8?$YearRetail Store Sales$11,22521,28531,35941,39251,44361,47471,467$