An activity on a probablistic time network diagram has these time estimates: optimistic =2, most likely =3, and pessimistic = 10. What is its expected actibity t and variance? Expected time: 5 Variance: 1.78 Expected time: 5 Variance: 10.67 Expected time: 4 Variance: 1.76 Expected time: 4 Variance: 10.67 Expected time: 5 Variance: 1,33 Consider the following work breakdown structure: What is the probability that the critical path for this project will be completed within zoo days? 0.99740.95440.99870.97720.8413 Consider the following work breakdown structure: What is the estimated standard deviation in the time for activity L ? 2 days 4 days 8 days 5 days 3 days Consider the following work breakdown structure: What is the estimated expected (mean) time for project completion? 145 days 180 days 135 days 170 days 255 days Consider the portion of a project depicted by this graph: What is the carliest finish time for activity 10.11 (far righthand side) if the earliest start time of 810 (upper left-hand side) is 12 and the earliest start time af 9-10 (lower lef hand side) is 13 ? 22 23 24 25 26 The Dulac Box plant produces wooden packing boxes to be used in the local seafood industry. Current operations allow the company to make 500 boxes per day, in two 8.hour shifts (250 boxes per shitt). The company has introduced some moderate changes in equipment, and conducted appropriate job training. so that production levels have risen to 350 boxes per shit. Labor costs average $15 per hour for each of the 5 full-time workers on each shilh. Capital costs were previously $3,000 per day and rose to $3,200 per day with the equipment modifications. Energy costs were unchanged by the modifications, at $400 per day. What is the firm's multactor productivity after the changes? It is less than 0.10 boxes/dollar. It is greater than or equal to 0.10 boxes/doilar but less than 0.115 boxes/dollar. It is greater than or equal to 0.1150 boxes/dollar but less than 0.130 boxes/dollar. It is greater than or equal to 0.139 boxes/dollar but less than 0.145 boxes/dollar. It is greater than or equal to 0.145 boxesidollar. The critical path for the network activities shown below is with duration C-E;14 Use the information in the table below. Time (Weeks) What is the cost of crash per week for activity C? $2000 $1000 $1125 $1375 $3250