A nurse researcher critiquing a research study notes that a confidence interval (CI) is too large for a new therapy to be clinically meaningful. What likely contributed to this statistical outcome?
a. Strong power level
b. Quantitative experimental design
c. Statistical analysis
d. Too small a sample
ANS: D
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A Strong power level would contribute to a small CI.
B Quantitative experimental design would not hamper CI outcomes.
C Statistical analysis is the process of calculating a CI.
D As the number of subjects in a study increases, the CI narrows.
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