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MIL-HDBK-781 TABLE XA. (1 - y 00 percent standard confidence limits on MTBF after reject decision (lower-e',(y,t)). (Continued) LOWER CONFIDENCE LIMITS FOR MTBF 0 ON THE REJECTION BOUNDARY TEST PLAN IV-D d = 2.0, ct = P = 0 20 NUMBER OF TOTAL FAILURES TEST TIME (t) Y = .50 Y= .30 Y= .20 Y= .10 Y = .05 2 .70 4171 .2870 .2338 1800 1476 3 2.08 .8127 .5944 .4997 .3996 .3367 4 2.80 .8914 .6843 .5646 .4578 .3898 4 3.46 i .0284 .7767 .6644 .5428 .4646 5 4.18 1.0734 .8193 .7052 .5809 .5004 5 4.86 1.1634 .8977 .7768 .6438 .5567 6 5.58 1 1910 .9251 8036 .6693 5809 6 6.24 1.2478 .9767 .8515 .7120 .6192 ! / 0.70 t e * 1 .^O Jf AA A O . 77f O ,0071 nr* i U7I OJ ->J 7 7.62 1.3031 1 0301 .9026 .7586 6612 8 8.34 1.3147 1.0423 .9146 .7700 .6717 8 9.74 1.3763 1 0986 9662 .8133 .7069 LOWER CONFIDENCE LIMITS FOR MTBF 6 ON THE REJECTION BOUNDARY TEST PLAN V-D d = 3.0, a = p=0.l0 NUMBER OF FAILURES TOTAL TEST TIME 0) Y = 50 Y =.30 Y =.20 Y = .10 Y =.05 2 .57 .3396 .2337 .1904 .1465 .1202 3 2.22 .8514 6256 .5271 .4225 .3564 4 3.75 1.0993 .8334 .7141 .5845 .5008 4 3 87 1 1275 .8559 .7338 6610 5152 5 5.40 1.2816 .yyn a j t .SOU m f .1 1 JO /AAA .ozmj 5 5.52 1.3007 1.0094 .8758 .7282 .6313 6 7.05 1 4030 1.1049 9664 .8118 .7089 8 7.17 1 4164 1.1166 .9772 .8213 .7175 7 8.70 I 4866 1.1845 1.0427 8825 .7746 -1 IA TC 1 1 1 1 1 - 1 1 <*?< dO 1 1 o^nn / 1 U.J J 1 .UJ^U 1 .J 1 1 X .X J ! J . 70 1 1 .DOUV LOWER CONFIDENCE LIMITS FOR MTBF 9 ON THE REJECTION BOUNDARY NUMBER OF FAILURES TOTAL TEST TIME (0 Y = .50 Y = .30 Y= .20 Y = .10 Y- .05 I 2145 14 1202 0926 0759 3 2.67 1.0053 .7422 .6266 .5034 .4253 3 4 32 1.5801 1.1648 9819 7862 6618 } 4 50 1 6344 1 2039 1 0142 8111 6818 124

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