The number of service calls received at LaFortune Electric during four months is shown in theA company has the following data for the past quarter and the coming year. Using level strategy

$($constant workforce$),$ how many employees would be needed. Develop a production plan, inventory

plan for the coming year. Compute the total cost for this plan.

following table:

Forecast the number of service calls in August by using a simple exponential smoothing model

with a smoothing constant of $0\mathrm{.}1.($Assume the forecast for April was $21.)$