SOLUTION: A batch of 10 gaskets contains 4 defective gaskets. If we draw samples of size 3 without replacement, from the batch of 10, find the probability that a sample contains 2 defective
Algebra.Com
Question 835843: A batch of 10 gaskets contains 4 defective gaskets. If we draw samples of size 3 without replacement, from the batch of 10, find the probability that a sample contains 2 defective gaskets.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
There are 8 ways to choose 3 gaskets (N-no defect, D-defect)
NNN
NND
NDN
NDD
DNN
DND
DDN
DDD
Three have 2 defective gaskets (NDD,DND,DDN) and their probabilities would be
Then for all three cases,
RELATED QUESTIONS
1/A batch contains 10 transistors of which three are defective. If three are chosen, in... (answered by jim_thompson5910)
In a batch of 8000 clock radios 9% are defective. A sample of 10 clock radios is... (answered by stanbon)
With one method of the procedure called acceptance sampling, a sample of items is... (answered by stanbon)
In a batch of 8,000 clock radios 4% are defective. A sample of 6 clock radios is randomly (answered by stanbon,edjones)
In A batch of 8000 clock radios 9% are defective. A sample of 6 clock radios is randomly (answered by stanbon)
A batch of pills consist of 10 good pills and 4 that are defective (contain the wrong... (answered by Boreal,ikleyn)
The quality-control inspector of a production plant will reject a batch of syringes if... (answered by ikleyn)
It is thought that, on average, 3% of light bulbs produced by a certain company last for... (answered by ewatrrr)
a cellular phone manufacturer randomly selects 5 phones from every batch of 50 produced.... (answered by oscargut)