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consider the following time series: t 1 2 3 4 5 6 7 Y1 120 110 100 96 94 92 88 a. construct a time

consider the following time series: t 1 2 3 4 5 6 7 Y1 120 110 100 96 94 92 88 a. construct a time series plot. what type of pattern exists in the data? b. Use the Excel solver to find the parameters for the ine that minimizes MSE this time series. c. What is the forecast for t = 8

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