Question 4 Below are the actual weekly booking from the day new Perodua Myvi was launched: Period Number of units Week 1 Week 2 Week 3 Week 4 Week 5 5,000 5,050 4,800 4,750 5,650 (a) What is the forecast for Week 6 using a moving average model with an average period (AP) = 3? (round your answer to the nearest whole number) (2 marks) (b) Using Nave approach, what will be the forecast for Week 6? (2 marks) (c) What is the forecast for Week 6 using a weighted moving average model with weights 0.5 (for newest), 0.3 and 0.2 (for oldest)? (2 marks) (d) Using exponential smoothed forecasting approach and an alpha value of 0.2, what is the exponential smoothed forecast for Week 6 whereby the forecast and actual data for Week 2 are the same. marks)