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Mathematics 9 Online
OpenStudy (anonymous):

CAN SOMEONE PLZ CHECK MY WORK? Quality Control A shipment of 11 printers contains 2 that are defective. Find the probability that a sample of 3 printers, drawn from 11, will not contain a defective printer.

OpenStudy (anonymous):

is this right 11! / 3!8! 39916800/(6)(40320) 39916800/241920 165

OpenStudy (anonymous):

11!/2!9! 39916800/(2)(362880) 39916800/725760 55 55/165=.33

OpenStudy (anonymous):

165/55=3

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