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Question Answered step-by-step Please see an attachment for details Image transcription textSuppose we have a time series data of a book store’s sales. We build a linear exponential smoothing model(LES) with Alpha = 0.5, Beta = 0.2. Please fill in all the blanks. Please round your results into 2 decimal places.Period Sales Level Trend Forecast Error 1 17.00 2 19.00 3 20.00 4 22.00 20 00 1.50 21.50 2 – 5 3…. Show more… Show more  Math Statistics and Probability Share QuestionEmailCopy link Comments (0)