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Home > INT3 > Chapter 4 > Lesson 4.4.3 > Problem 4-127

4-127.

A properly randomized and controlled experiment can determine cause and effect, unlike an observational study, which can be plagued by lurking variables. Why do we not conduct an experiment for every study? Why do observational studies at all? Homework Help ✎

Think of the pros and cons of conducting an experiment.
What about the pros and cons of an observational study?