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Preserve Source Integrity in Oratory
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Speech & Debate
SD.237 Preserve Source Integrity in Oratory
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A study estimates a 5-percentage-point improvement with a 95 percent confidence interval from 1 to 9 points. Which speech phrasing is most faithful?
A
The study proved the improvement was exactly 5 points for everyone.
B
The study found any increase from 1 to 95 points.
C
The study estimated a 5-point improvement, with uncertainty consistent with an increase of roughly 1 to 9 points.
D
Because the interval is not a single number, the study found no result.
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