Develop the three-week moving average for this time series. (Round your answers to two decimal places.) Week Time Series Value Forecast 1 18 2 11 3 13 4 10 14 Correct: Your answer is correct. 5 14 11.33 Correct: Your answer is correct. 6 12 12.33 Correct: Your answer is correct. Compute MSE. (Round your answer to two decimal places.) MSE =