A tourist center is open on weekends (Friday, Saturday, and Sunday). The owner-manager hopes to improve scheduling of part-time employees 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: - Friday Saturday Sunday 132 242 152 2 142 242 152 142 252 162 4 142 252 162 5 147 267 162 6 152 267 172 Click here for the Excel Data File a. Develop seasonal relatives for the shop using the centered moving average method (Round your intermediate calculations and final answers to 2 decimal places.) X Friday Saturday Sunday b. Develop seasonal relatives for the shop using the SA method. (Round your Intermediate calculations and final answers to 4 decimal places.) SA Index Friday Saturday