Five percent of the U.S. workforce test positive for illicit drugs. You randomly select 14 workers. Find
Question:
Five percent of the U.S. workforce test positive for illicit drugs. You randomly select 14 workers. Find the probability that the number who test positive for illicit drugs is
(a) exactly two,
(b) more than two, and
(c) from two to five.
In Exercises 19–26, find the indicated probabilities. If convenient, use technology or Table 2 in Appendix B.
Transcribed Image Text:
Table 2-Binomial Distribution This table shows the probability of x successes in n independent trials, each with probability of success p. 1.029 135 .243 .325 .384 422 P n x .01 .05 .10 .15 .20 .25 .30 .35 .40 .45 .50 .55 .60 .65 .70 .75 .80 .85 .90 .95 20.980 .902 .810 .723 .640 .563 .490 .423 .360 .303 .250 .203.160 .123 .090 .063 .040 .023 .010 .002 1.020 .095 .180 .255 .320 .375 .420 .455 .480 .495 .500 .495 .480 .455 .420 .375 .320 .255 .180 .095 2 .000 .002 .010 .023 .040.063 .090 .123 .160 .203 .250 .303 .360 .423 .490 .563 .640 .723 .810 .902 3 0.970 .857 .729 .614 .512 .422 .343 .275 .216 .166 .125 .091 .064 .043 .027 .016 .008 .003 .001 .000 441 444 432 .408 .375 .334 .288 .239 .189 .141 .096 .057 .027 .007 2 .000 .007.027 .057 .096 .141 .189 .239 .288 .334 .375 .408 .432 .444 441 422 .384 .325 .243 .135 3 .000 .000 .001 .003 .008 .016 .027 .043 .064 .091 .125 .166 .216 275 .343 .422 .512 .614 .729 .857 4 0961 .815 .656 .522 .410 .316 .240 .179 130 .092 .062 .041 .026 .015 .008 .004 .002 .001 .000 .000 1.039 171 .292 .368 .410 .422 .412 .384 .346 .300 .250 .200 .154 112 .076 .047 .026 .011 .004 .000 2 .001 .014 .049 .098 .154 211 .265 .311 .346 .368 .375 .368 .346 .311 .265 211 .154 .098 .049 .014 .026 .047 .076 .112 .154 .200 .250 .300 .346 .384 .412 422 .410 .368 .292 .171 4 .000 .000 .000 .001 .002 .004 .008 .015 .026 .041 .062 .092 .130 .179 .240 .316 .410 .522 .656 .815 5 0.951 3 .000 .000 .004 .011 774 .590 .444 .328 .237 .168 .116 .078 .050 .031 .019 .010 .005 .002 .001 .000 .000 .000 .000 1.048 204 .328 .392 .410 .396 .360 .312 .259 .206 .156 .113 .077 .049 .028 .015 .006 .002 .000 .000 2 .001 .021 .073 .138 .205 .264 .309 .336 .346 .337 .312 .276 .230 .181 .132 .088 .051 .024 .008 .001 3 .000 .001 .008 .024 .051 .088 .132 .181 .230 .276 .312 .337 .346 .336 .309 .264 .205 .138 .073 .021 4 .000 .000 .000 .002 .006 .015 .028 .049 .077 .113 .156 .206 .259 .312 .360 .396 .410 .392 .328 .204 5 .000 .000 .000 .000 .000 .001 .002 .005 .010 .019 .031 .050 .078 .116.168 .237 .328 .444 .590 .774 6 0.941 735 .531 .377 .262 .178 .118 .075 .047 .028 .016 .008 .004 .002 .001 .000 .000 .000 .000 .000 1.057 .232 .354 .399 .393 .356 .303 .244 .187 .136 .094 .061 .037 .020 .010 .004 .002 .000 .000 .000 2001 .031 .098 .176 .246 .297 .324 .328 .311 .278 .234 .186 .138 .095 .060 .033 .015 .006 .001 .000 3 .000 .002 .015 .042 .082 .132 .185 .236 .276 .303 .312 .303 .276 .236 .185 .132 .082 .042 .015 .002 4 .000 .000 .001 .006 .015 .033 .060 .095 .138 .186 .234 .278 .311 .328 .324 .297 246 .176 .098 .031 5 .000 .000 .000 .000 .002 .004 .010 .020 .037 .061 .094 .136 .187 244 .303 .356 .393 .399 .354 .232 6 .000 .000 .000 .000 .000 .000 .001 .002 .004 .008 .016 .028 .047 .075 .118 .178 .262 .377 .531 .735
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