Reliability & Life Testing Handbook, Volume 1

Appendix I: One-Sided Tolerance Factors for the Normal Distribution.

?

? = 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

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