Emergency calls to the 911 system of Gainesville Florida for
Emergency calls to the 911 system of Gainesville, Florida, for the past 24 weeks are shown in the following table:


(a) Compute the exponentially smoothed forecast of calls for each week. Assume an initial forecast of 50 calls in the first week, and use α = .2. What is the forecast for week 25?
(b) Reforecast each period using α = .6.
(c) Actual calls during week 25 were 85. Which smoothing constant provides a superior forecast? Explain and justify the measure of error youused.
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