A16 APPENDIX B Table 4 —Standard Normal Distribution Table 4—Standard Normal Distribution z 0 z Area z .09 .08 .07 .06 .05 .04 .03 .02 .01 .00 −3.4 .0002 .0003 .0003 .0003 .0003 .0003 .0003 .0003 .0003 .0003 −3.3 .0003 .0004 .0004 .0004 .0004 .0004 .0004 .0005 .0005 .0005 −3.2 .0005 .0005 .0005 .0006 .0006 .0006 .0006 .0006 .0007 .0007 −3.1 .0007 .0007 .0008 .0008 .0008 .0008 .0009 .0009 .0009 .0010 −3.0 .0010 .0010 .0011 .0011 .0011 .0012 .0012 .0013 .0013 .0013 −2.9 .0014 .0014 .0015 .0015 .0016 .0016 .0017 .0018 .0018 .0019 −2.8 .0019 .0020 .0021 .0021 .0022 .0023 .0023 .0024 .0025 .0026 −2.7 .0026 .0027 .0028 .0029 .0030 .0031 .0032 .0033 .0034 .0035 −2.6 .0036 .0037 .0038 .0039 .0040 .0041 .0043 .0044 .0045 .0047 −2.5 .0048 .0049 .0051 .0052 .0054 .0055 .0057 .0059 .0060 .0062 −2.4 .0064 .0066 .0068 .0069 .0071 .0073 .0075 .0078 .0080 .0082 −2.3 .0084 .0087 .0089 .0091 .0094 .0096 .0099 .0102 .0104 .0107 −2.2 .0110 .0113 .0116 .0119 .0122 .0125 .0129 .0132 .0136 .0139 −2.1 .0143 .0146 .0150 .0154 .0158 .0162 .0166 .0170 .0174 .0179 −2.0 .0183 .0188 .0192 .0197 .0202 .0207 .0212 .0217 .0222 .0228 −1.9 .0233 .0239 .0244 .0250 .0256 .0262 .0268 .0274 .0281 .0287 −1.8 .0294 .0301 .0307 .0314 .0322 .0329 .0336 .0344 .0351 .0359 −1.7 .0367.0375.0384 .0392.0401.0409.0418.0427.0436.0446 −1.6 .0455 .0465 .0475 .0485 .0495 .0505 .0516 .0526 .0537 .0548 −1.5 .0559 .0571 .0582 .0594 .0606 .0618 .0630 .0643 .0655 .0668 −1.4 .0681 .0694 .0708 .0721 .0735 .0749 .0764 .0778 .0793 .0808 −1.3 .0823 .0838 .0853 .0869 .0885 .0901 .0918 .0934 .0951 .0968 −1.2 .0985 .1003 .1020 .1038 .1056 .1075 .1093 .1112 .1131 .1151 −1.1 .1170 .1190 .1210 .1230 .1251 .1271 .1292 .1314 .1335 .1357 −1.0 .1379 .1401 .1423 .1446 .1469 .1492 .1515 .1539 .1562 .1587 −0.9 .1611 .1635 .1660 .1685 .1711 .1736 .1762 .1788 .1814 .1841 −0.8 .1867 .1894 .1922 .1949 .1977 .2005 .2033 .2061 .2090 .2119 −0.7 .2148 .2177 .2206 .2236 .2266 .2296 .2327 .2358 .2389 .2420 −0.6 .2451 .2483 .2514 .2546 .2578 .2611 .2643 .2676 .2709 .2743 −0.5 .2776 .2810 .2843 .2877 .2912 .2946 .2981 .3015 .3050 .3085 −0.4 .3121 .3156 .3192 .3228 .3264 .3300 .3336 .3372 .3409 .3446 −0.3 .3483 .3520 .3557 .3594 .3632 .3669 .3707 .3745 .3783 .3821 −0.2 .3859 .3897 .3936 .3974 .4013 .4052 .4090 .4129 .4168 .4207 −0.1 .4247 .4286 .4325 .4364 .4404 .4443 .4483 .4522 .4562 .4602 −0.0 .4641 .4681 .4721 .4761 .4801 .4840 .4880 .4920 .4960 .5000 Critical Values Level of Confidence c zc 0.80 1.28 0.90 1.645 0.95 1.96 0.99 2.575 z = 0 zc −zc c z Table A-3, pp. 681– 682 from Probability and Statistics for Engineers and Scientists, 6e, by Walpole, Myers, and Myers. Copyright 1997. Pearson Prentice Hall, Upper Saddle River, N.J.
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