求助一道题,很着急,谢谢

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You have been hired as a consultant by building contractor, who have been sued by the owners’ representatives
of a large condominium project for shoddy construction work. In order to assess the damages for the various
units, the owners’ association sent out a letter to owners and asked if people were willing to make their units
available for destructive testing. Destructive testing was conducted in some of these units as a result of the
responses. Based on the tests, the owners’ association inferred the damage over the entire condo complex. Do
you think that the inference is valid in this case? Discuss how proper sampling should proceed in this situation.

请问这道题的思路是什么啊?

[此贴子已经被作者于2009-5-24 12:21:09编辑过]

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关键词：Construction Destructive Association contractor Consultant conducted building testing willing people

很着急,有知道的吗?说说啊,谢谢

问题翻译如下：

您已被建筑承包商聘请为顾问，而建筑承包商已被大型公寓项目的业主代表起诉建造的是伪劣工程。为了评估对业主住房的损害，业主协会发出了一封信给业主，并询问业主是否愿意将他们的住房用于一种破坏性试验。破坏性试验是在一些住房中进行的，主要是基于住房对这种实验的反应。根据测试，业主协会将会根据测试结果来推断整个公寓的损坏情况。你认为这种推理是有效的吗？讨论应在这种情况下如何选择恰当的样本。

提供一个参考的解决方案：
可以对第i个业主的住房进行破坏性试验的效果设定为Yi，对其进行破坏性试验设定为一个虚拟变量Xi（Xi=1，第i个业主的住房执行了破坏性试验；Xi=0，第i个业主的住房没有执行破坏性试验），Yi对Xi回归，考察回归系数的显著性，就可以根据测试结果来推断整个公寓的损坏情况。

谢谢楼上的回答,好人啊