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Plot (iv) What type of pattern exists in the data? Horizontal Pattern b. Develop a three-week moving average for this time series. Compute MSE and a forecast for week 7. Round your answers to two decimal places. Time Series Week Forecast Value 1 20 2 13 3 16 4 12 16.33 5 17 13.67 6 14 14.00 MSE: The forecast for week 7: C. Use a = 0.2 to compute the exponential smoothing values for the time series. Compute Me and a forecast for week 7. Round your answers to two decimal places. Time Series Week Forecast Value 1 20 2 13 20 3 16 13 4 12 16 5 17 121 6 14 17 x MSE: 8.90 The forecast for week 7: 14.94 X e. Use trial and error to find a value of the exponential smoothing coefficient a that results in a smaller MSE than what you calculated for Q = 0.2. Find a value of a for the smallest MSE. Round your answer to three decimal places. a 14.94 X