Please show each individual answer

1 pts Question 1 Data collected on the yearly registrations for a Six Sigma seminar at the Quality College are shown in the following table: Year 1 2 3 4 5 6 7 8 9 10 11 Registrations 4 6 4 5 10 8 7 9 12 14 15 (000) a. Develop a 3-year moving average to forecast registrations from year 4 to year 12. What is the forecast? Select) What is the MAD? Select b. Estimate demand again for years 4 to 12 with a 3-year weighted moving average in which registrations in the most recent year are given a weight of 2, and registrations in the other 2 years are each given a weight of 1. What is the forecast? Select What is the MAD? Select c. Use exponential smoothing with (a =-47), assume the initial period forecast is 5. What is the forecast for the next period? Select] What is the MAD? Select d. Based on Error Analysis, which of the forecasting methods seems better? Select 1