Registration numbers for an accounting seminar over the past 10 weeks are shown below: Week 1 2 3 4 5 6 7 10 Registrations 22 21 25 27 35 29 33 37 41 37 a) Starting with week 2 and ending with week 11, forecast registrations using the naive forecasting method (enter your responses as whole numbers). Week 1 2 3 4 5 6 7 9 10 11 Forecast 22 21 25 27 35 29 33 17 b) Starting with week S and ending with week 11, forecast registration using a two-week moving average (enter your responses as whole numbers). Week 1 2 3 4 5 6 7 9 10 11 Forecast 21.5 23 28 31 32 31 c) Starting with week 5 and ending with week 11, forecast registrations using a four-week moving average (enter your responses as whole numbers). Week 1 2 3 4 5 6 7 8 9 10 11 Forecast 23.75 27 29 31 33.5 dj The mean absolute deviations using the naive, two- and four-week moving average forecasting methods are 4.11, 4.19, and 5.46, respectively. Based on the MAD, has performed better. The mean standard errors using the naive, two- and four-week moving average forecasting methods are 20.6, 23.8. and 40.5, respectively. Based on the MSE. has performed better