A gift shop in a tourist centre is open only 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 activity at the store (sales transactions per day) are shown in the following table:

a. Develop seasonal relatives for each day using the centred moving average method.
b. Deseasonalize the data, fit an appropriate model to the deseasonalized data, project three days ahead, and reseasonalize the projections to forecast the sales transactions for each day, Friday to Sunday, of next week.

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Week 4 150 208 173 5 159 273 170 6 163 276 183 2 3 149 154 152 Friday Saturday 250255260 Sunday nl 166 162