A tourist center is open on weekends (Eriday. Saturday, and Sunday). The owner-manager hopes to improve scheduling of part-timeemployees by determining seasonal relatives for each of these days. Data on recent traffic at the center have been tabulated and are shown in the following table: Glickherelos ithe Excel Datafille. a. Develop seasonal relatives for the shop using the centered moving average method. (Round your intermediate caleulations and final answers to 2 decimal places.) b. Develop seasonal relatives for the shop using the SA method. (Round your intermediate calculations and final answers to 4 . decimal places.)