westion 2 (4 Points): Mark True or False and correct false statements 1. The lump-sum type of contracts is less risky to contractors as opposed to the re-measured type True False 2. The sliding fee, in cost-plus type of contracts, is a fee that decreases linearly with the decrease in the cost of the project. True False 3. The costs of mobilization and demobilization for a piece of equipment are considered as part of the cost of operating the equipment. True False Detailed cost estimates are prepared by the designer during the the bidding stage. 4. True False The project manager has the option to select between two methods of construction: work for 8 hours a day or work for 10 hours a day. When working for 8 hours a day, it is expected that the duration will be lower and the total direct cost will be lower as well, as compared with working for 10 hours a day. 5. True False 6. A dummy activity has a zero duration and is only needed with the activity-on-arrow (AOA) to maintain the logical relationships among activities. False True 7. Purchasing reinforcing bars for columns is considered a production activity False True 8. Independent activities are those activities that do not depend on other activities False True