Concept explainers
To explain the conclusion of the study.
Answer to Problem 9.53E
We cannot be confident in the conclusion.
Explanation of Solution
First need to understand about the experimental study and observational study:
Experimental study: Assigning people or things to groups and applying some treatment to one group, while the other group does not receive the treatment.
Observation study: In an observational study, measure or survey members of a sample without trying to affect them.
The given study is an observational study. This result might be strongly affected by confounding. Therefore, we cannot be confident in the conclusion, because it is not sure that the medications are causing the reduced risk of breast cancer.
Chapter 9 Solutions
Statistics Through Applications
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