(c) Use a = 0.2 to compute the exponential smoothing values for the time series. (Round your answers to three decimal places.) Week Time Series Value Forecast 1 25 2 13 3 22 4 13 5 20 6 24 7 16 Compute MSE. (Round your answer to two decimal places.) MSE = What is the forecast for week 8? (Round your answer to two decimal places.) (d) Compare the three-week moving average forecast with the exponential smoothing forecast using a = 0.2. Which appears to provide the better forecast based on MSE? The exponential smoothing using a = 0.2 provides a better forecast since it has a smaller MSE than the three-week moving average. The exponential smoothing using a = 0.2 provides a better forecast since it has a larger MSE than the three-week moving average. The three-week moving average provides a better forecast since it has a smaller MSE than the exponential smoothing using a = 0.2. The three-week moving average provides a better forecast since it has a larger MSE than the exponential smoothing using a = 0.2. (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 a = 0.2. =