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:

a$.$ Develop seasonal relatives for the shop using the centered moving average method. $($Round your intermediate calculations and

final answers to $2$ decimal places.$)$

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.$)$