easy · GMAT Verbal
A clinic added text appointment reminders, and missed visits declined. The clinic concludes texts reduced missed visits.
Which new fact most strengthens the conclusion?
- The result had already been improving at the same rate before the change.
- Very few of the people measured actually used the change.
- A separate change occurred at the same time and could explain the result.
- Patients randomly sent texts missed fewer visits than patients not sent texts.
- The organization expected the result to improve before collecting any data.
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