A shipment of 9 printers contains 4 that are defective. Find the probability that a sample of size 4, drawn from the 9, will not contain a defective printer .

Question

A shipment of 9 printers contains 4 that are defective. Find the probability that a sample of size 4​, drawn from the​ 9, will not contain a defective printer .
the probability is ?

Scott · Accepted Answer

there are 9C4 ways of selecting four printers there are 5C4 ways of selecting four good printers the probability is ... 5C4 / 9C4

A shipment of 9 printers contains 4 that are defective. Find the probability that a sample of size 4​, drawn from the​ 9, will not contain a defective printer .

A shipment of 9 printers contains 4 that are defective. Find the probability that a sample of size 4, drawn from the 9, will not contain a defective printer .