Reliability & Life Testing Handbook, Volume 1

| ? | ? = 0.75 | ? = 0.90 | ? = 0.95 | ? = 0.99 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n | 0.25 | 0.10 | 0.05 | 0.01 | 0.001 | 0.25 | 0.10 | 0.05 | 0.01 | 0.001 | 0.25 | 0.10 | 0.05 | 0.01 | 0.001 | 0.25 | 0.10 | 0.05 | 0.01 | 0.001 |
| 3 | 1.464 | 2.501 | 3.152 | 4.396 | 5.805 | 2.602 | 4.258 | 5.310 | 7.340 | 9.651 | 3.804 | 6.158 | 7.655 | 10.552 | 13.857 | |||||
| 4 | 1.256 | 2.134 | 2.680 | 3.726 | 4.910 | 1.972 | 3.187 | 3.957 | 5.437 | 7.128 | 2.619 | 4.163 | 5.145 | 7.042 | 9.215 | |||||
| 5 | 1.152 | 1.961 | 2.463 | 3.421 | 4.507 | 1.698 | 2.742 | 3.400 | 4.666 | 6.112 | 2.149 | 3.407 | 4.202 | 5.741 | 7.501 | |||||
| 6 | 1.087 | 1.860 | 2.336 | 3.243 | 4.273 | 1.540 | 2.494 | 3.091 | 4.242 | 5.556 | 1.895 | 3.006 | 3.707 | 5.062 | 6.612 | 2.849 | 4.408 | 5.409 | 7.334 | 9.540 |
| 7 | 1.043 | 1.791 | 2.250 | 3.126 | 4.118 | 1.435 | 2.333 | 2.894 | 3.972 | 5.201 | 1.732 | 2.755 | 3.399 | 4.641 | 6.061 | 2.490 | 3.856 | 4.730 | 6.411 | 8.348 |
| 8 | 1.010 | 1.740 | 2.190 | 3.042 | 4.008 | 1.360 | 2.219 | 2.755 | 3.783 | 4.955 | 1.617 | 2.582 | 3.188 | 4.353 | 5.686 | 2.252 | 3.496 | 4.287 | 5.811 | 7.566 |
| 9 | 0.984 | 1.702 | 2.141 | 2.977 | 3.924 | 1.302 | 2.133 | 2.649 | 3.641 | 4.772 | 1.532 | 2.454 | 3.031 | 4.143 | 5.414 | 2.085 | 3.242 | 3.971 | 5.389 | 7.014 |
| 10 | 0.964 | 1.671 | 2.103 | 2.927 | 3.858 | 1.257 | 2.065 | 2.568 | 3.532 | 4.629 | 1.465 | 2.355 | 2.911 | 3.981 | 5.203 | 1.954 | 3.048 | 3.739 | 5.075 | 6.603 |
| 11 | 0.947 | 1.646 | 2.073 | 2.885 | 3.804 | 1.219 | 2.012 | 2.503 | 3.444 | 4.515 | 1.411 | 2.275 | 2.815 | 3.852 | 5.036 | 1.854 | 2.897 | 3.557 | 4.828 | 6.284 |
| 12 | 0.933 | 1.624 | 2.048 | 2.851 | 3.760 | 1.188 | 1.966 | 2.448 | 3.371 | 4.420 | 1.366 | 2.210 | 2.736 | 3.747 | 4.900 | 1.771 | 2.773 | 3.410 | 4.633 | 6.032 |
| 13 | 0.919 |