A project of 2 million has an adverse event that has the probability of 50% of occurrence and a potential loss of $20,000. This represents an expected negative value of:

An environmental remediation project has succeeded in reducing costs.This achiebed by implementing a change request for new technology that was not available when the scope was originally defined.The technology change that is adopted is a/an:

在谈判中最常出现的沟通问题是（）

Initiation outputs for a project include all of the following except

以下哪些说法能最好地描述属性抽样和变量抽样？（）