Emergency calls to Winter Park, Florida's 911 systems for the past 24 weeks are as follows:
(a) Compute the exponentially smoothed forecast of calls for each week. Assume an initial forecast of 50 calls in the first week and use ? = 0.1. What is the forecast for the 25th week?
(b) Reforecast each period using ? = 0.6.
(c) Actual calls during the 25th week were 85. Which smoothing constant provides a superior forecast?