Question: In Example 4.4, we estimated a model relating number of campus crimes to student enrollment for a sample of colleges. The sample we used was

In Example 4.4, we estimated a model relating number of campus crimes to student enrollment for a sample of colleges. The sample we used was not a random sample of colleges in the United States, because many schools in 1992 did not report campus crimes. Do you think that college failure to report crimes can be viewed as exogenous sample selection? Explain.

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