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OpenStudy (anonymous):
A warehouse has 5,000 drums of liquid chemicals. The foreman knows that 50 of these drums contain off-quality chemicals. Assume that the drum is replaced each time before sampling. What is the probability that none of 3 drums he selects at random are off-quality? (1/100)³ (50x49x48)/(5,000³) (99/100)³
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OpenStudy (amistre64):
(5000-50)/5000 (500-5)/500 (100-1)/100 = 99% success rate
OpenStudy (amistre64):
so .99^3
OpenStudy (anonymous):
thank you!
OpenStudy (amistre64):
youre welcome
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