SOLUTION: in a shipment of 11 CD players, two are defective. Find the probability that a sample of 2 CD players will not contain any that are defective.
Algebra.Com
Question 278601: in a shipment of 11 CD players, two are defective. Find the probability that a sample of 2 CD players will not contain any that are defective.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
2/11 probability a player will be defective
let a=2/11, b=9/11
(a+b)^2=a^2+2ab+b^2
probability none defective = b^2 = (9/11)^2 = 81/121 = .6694
.
Ed
RELATED QUESTIONS
In a shipment of 11 CD players, two are defective. Find the probability that a sample of... (answered by stanbon,edjones)
In a shipment of 11 CD players, two are defective. Find the probability that a sample of... (answered by Tatiana_Stebko)
a shipment of 9 printers contains 4 that are defective. Find the probability that a... (answered by richard1234)
A shipment of 11 printers contains 2 that are defective. Find the probability that a... (answered by stanbon)
You just received a shiftpment of 11 mp3 players. One mp3 player is defective. You will... (answered by Boreal)
A shipment of 30 MP3 players contains 6 that were defective. 5 MP3 players are selected... (answered by stanbon)
Replacement times for CD players are normally distributed with a mean of 7.1 years and a... (answered by stanbon)
a shipment of 9 printers contains 4 that are defective. find the probability that a... (answered by KMST)
A shipment of 10 printers contains 2 that are defective. Find the probability that a... (answered by ikleyn)