17. From a WBS core characteristics perspective, what is wrong with the following WBS sequence and how would you correct it? NBS NO. Descriptor 3.4 Preparation Area 3.4.1 WP - Locate and install cabinets and countertops 3.4.2 WP - Locate/install cabinet electrical receptacles 3.4.3 WP - Interface receptacles with outdoor electrical service system 3.6 Eating/Lounging Area 3.6.1 WP - Purchase patio furniture 3.6.2 WP - Assemble/install patio furniture Scenario 4: Project UMUC is to produce 300 widgets and is scheduled to take five weeks. Each unit is planned to cost $80. The project is severely cost constrained; the project budget does not include any contingency or management reserves. Performance data for the project at the end of week four is presented below: 240 total units were planned to be produced 270 units have actually been produced The financial manager reported that the business had actually spent $23,000 on the project by the end of week four. You calculate, PV, EV, and BAC as follows: PV = 240 units X $80 per unit = $19,200 EV = 270 units X $80 per unit = $21,600 BAC = 300 units x $80 per unit = $24,000 18. Calculate cost variance (CV). Based on this information, is the project over or under budget? Explain. 19. Calculate schedule variance (SV). Based on this information, is the project ahead or behind schedule? Explain. 20. Calculate cost performance efficiency to three digits. Based on this information, is the project performing better or worse than planned? Explain. 21. Calculate schedule performance efficiency to three digits. Based on this information, is the project performing better or worse than planned? Explain