Determine whether the given conclusion is likely to be a result of an observational study or a controlled experiment. Also, state whether it can be concluded that owning a dog causes a decrease in cardiovascular disease from the study.

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Chapter 12, Problem 42SE

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Determine whether the given conclusion is likely to be a result of an observational study or a controlled experiment. Also, state whether it can be concluded that owning a dog causes a decrease in cardiovascular disease from the study.

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