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Total number of the micro-bars for each cross-section size and estimation of sample size at a specified confidence level and error using QI Macros.
| Cross-sectional area |
1×1 mm2 | 1×2 mm2 | 1×3 mm2 | |||
|---|---|---|---|---|---|---|
| Plasma treated |
Control | Plasma treated |
Control | Plasma treated |
Control | |
| Total number of micro-bars | 40 | 28 | 35 | 27 | 10 | 10 |
| Predicted sample size | 33 | 21 | 25 | 17 | 18 | 22 |
| Confidence level (%) | 90 | 90 | 90 | 90 | 90 | 90 |
| Error (MPa) | ± 5 | ± 4 | ± 4 | ± 4 | ± 4 | ± 4 |
