Biostatistics & Research · single question

When comparing three laser types in a study, two with negative confidence intervals and one with a positive CI, which should be recommended?

1. Laser 1 (negative CI, lowest price)
2. Laser 2 (positive CI, middle price — Erbium:YAG)
3. Laser 3 (negative CI, highest price)
4. The one with widest confidence interval

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