Biostatistics & Research · single question
Three lasers are compared, each reported with a mean difference and 95% confidence interval: Laser A, 3.5 (−1.3 to 5.5); Laser B, 3.5 (2.34 to 5.12); Laser C, 3.2 (−1.0 to 6.8). Which finding is statistically significant?
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Correct answer: D. Laser B only
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