A person estimates that a commute home will most likely take one hour. On further questioning, she estimates that the trip could take as little as 45 minutes, best case, or as long as 1 hour 45 minutes, worst case. What is the standard deviation based on the estimates?一个人估计她回家最可能的情况是花1小时时间。她又进一步推算,在最快情况下要45分钟,最慢要1小时45分钟基于这样的估计,这个人回家所花的时间的标准差是多少
A. 10 minutes 10分钟
B. 15 minutes 15分钟
C. 50 minutes 50分钟
D. 60 minutes 60分钟
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There are three activities in the project. Activity A will take five weeks, activity B will take six weeks, activity C will take seven weeks. Activity A will take one week before activity B starts. Activity C will take one week after activity B starts. How long will the project take to complete?项目有三个活动,A活动要5周,B活动要6周,C活动要7周,A活动完成1周后B才能开始,C活动要在B开始后一周才能开始,项目一共要多久能完成?
A. 12 weeks 12周
B. 13 weeks 13周
C. 14 weeks 14周
D. 17 weeks 17周
Fast tracking means to:快速跟进意味着
A Speed up a project through parallel tasks通过并行任务加速项目进展
B. Swap one task for another一项任务与另一项任务交换
C. Reduce the number of tasks if possible如有可能,减少任务数量
D. B and CB和C
The critical path time needs to be reduced by 20% .you may take the following actions except:当需要减少20% 关键路径时间时,你可以采用下列的行动,但()除外:
Adding resources增加资源
B. Crashing time schedule压缩时间/进度赶工
C. Eliminating float消除浮动时间
D. Paralleling activities并行安排活动
Management has decided to "crash" a project in order to avoid penalty payments for late deliveries. To crash the project, either overtime or additional resources should be assigned to:管理层已决定“赶工”一个项目,以避免因延迟交付而支付罚款。若要赶工该项目,应将加班或额外资源分配给:
All activities.所有活动
B. Only those activities with the longest time durations.仅仅历时最长的活动
C. Those activities on the critical path begining with the longest time duration activities.关键路径上的活动
D. Those activities with the greatest degree of risk.最大风险的活动