Redo example 13.2 with new data: Patient Arrivals is 10% more. Using the Moving Average Method EXAMPLE 13.2 a. Compute a three-week moving average forecast for the arrival of medical clinic patients in week 4 . The numbers of arrivals for the past three weeks were as follows: b. If the actual number of patient arrivals in week 4 is 415 , what is the forecast error for week 4 ? c. What is the forecast for week 5