(Solved): b-1. Use the 3-period moving average to make in-sample forecasts. (Round intermediate calculations ...
b-1. Use the 3-period moving average to make in-sample forecasts. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) b-2. Compute the resulting MSE and MAD. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) c-1. Use the exponential smoothing method to make in-sample forecasts with \( a=0.6 \). (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) c-2. Compute the resulting MSE and MAD. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)