A line manager provides you with three estimates for his activity in
your PERT network. His estimates are 2 weeks optimistically, 4 weeks most
likely, and 12 weeks pessimistically. which would appear on the chart ( ) .
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A line manager provides you with three estimates for his activity in
your PERT network. His estimates are 2 weeks optimistically, 4 weeks most
likely, and 12 weeks pessimistically. which would appear on the chart ( ) .
题目中提到了经理对于活动时间的三种估计,分别是乐观地估计为2周,最可能为4周,悲观地估计为12周。在PERT网络中,为了得到更准确的完成时间估计,通常使用乐观时间、最可能时间和悲观时间的加权平均数来计算。乐观时间、最可能时间和悲观时间分别赋予不同的权重系数,然后计算加权平均时间。根据PERT的计算方法,最可能的完成时间应该是这三种估计的加权平均数,即(2 + 4 + 12)/ 3 = 5周。因此,应该选择选项B,即活动在图表上的时间应为5周。
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