Consider the following time series data Month 1 2 3 4 5 6 7 8 9 10 11 12 Value 80 82 84 83 83 84 85 84 82 83 84 83   a) Construct a time series plot in Excel. Label the axes and graph.  b) Develop a three month moving average forecast. Compute MSE and a forecast for month 13.  c) Develop an exponential smoothing forecast with a = 0.35. Compute MSE and a forecast for month 13.

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