Question: Question b, c, d, and e please The annual sales of hot drink at a caf for the three past years are listed in the

Question b, c, d, and e please Question b, c, d, and e please The annual sales
The annual sales of hot drink at a caf for the three past years are listed in the following table: Year Spring Summer Fall Winter 2018 3420 830 3760 6530 2019 3390 710 3500 6800 2020 2950 910 4400 7050 a) Compute the Seasonal Indices. (2 points) b) De-seasonalize the Sales using Seasonal Indices. (2 points) c) Is there a trend in the data? (2 points) (Hint: use the least square method) d) Generate 2021 quarters forecasts using the trend projection. (2 points) e) Adjust the trend projection with seasonality for 2021. (2 points)

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