The total cost of a project consists of fixed cost and variable cost. Fixed cost of this project is $3200 while, the variable cost of project could be estimated based upon numberof worker and duration of the project.

Each worker's salary is $4500 (for project completion) and weekly cost of the project is $15,000. The number of required workers for this project is probabilistic with the following PMF:

W 4 5 6 (Number of required Workers) 7 P(W=W) 0.25 0.15 0.20 0.40\f