A researcher working for a company that produces a standardized exam that predicts whether or not nursing students will pass the national licensure exam tests this tool at a level of significance of ? = .01, with power = .91
The results are statistically significant. What interpretation can the researcher justifiably make?
a. Findings are important to nursing schools, and valuable for them.
b. The exam should be used by all nursing schools.
c. There is good evidence that the results can be replicated, with similar results.
d. Results will be the same if the study is repeated with another sample.
ANS: C
The researcher chooses the probability of making a Type I error when setting α, the level of significance. Nursing researchers usually set a level of significance of p <.05. A level of significance of p <.01 is much more stringent, and decreases the possibility of error to 1%.
Significant results that coincide with the researcher's predictions are the easiest to explain and, unless weaknesses are present, validate the proposed logical links among the elements of the study. There is good evidence that the reports are reproducible.
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