question 2 a) What are the 2 main important elements missing in Work Breakdown Structure (WBS) analysis?

b) What is the correlation between cost and revenue accuracy with WBS level at various estimation level? c) Ali is an engineer on temporary assignment at a refinery operation in Seaside. He has reviewed a cost estimate for $43x,xxx (please replace the x value with the last four digits of your old matric number), which covers some new processing equipment for the ethylene line. The equipment itself is estimated at $250,000 with a construction cost factor of 0.30 and an installation cost factor of 0.30. No indirect cost factor is listed, but he knows from other sites that indirect cost is a sizable amount that increases the cost of the lines equipment. i) If the indirect cost factor should be 0.40, determine whether the current estimate includes a factor comparable to this value.

ii) Determine the cost estimate if the 0.40 indirect cost factor is used.