SOLUTION: Three samples are taken simultaneously from a process that is know to produce 20% defects. What is the probability that all three samples will be good.

Algebra ->  Probability-and-statistics -> SOLUTION: Three samples are taken simultaneously from a process that is know to produce 20% defects. What is the probability that all three samples will be good.      Log On


   



Question 895363: Three samples are taken simultaneously from a process that is know to produce 20% defects. What is the probability that all three samples will be good.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Three samples are taken simultaneously from a process that is know to produce 20% defects. What is the probability that all three samples will be good.
-----
Note 20 out of 100 are defective.
Therefore 80 out of 100 are good.
-------------------------
# of ways to succeed:: 80C3
# of random triples:: 10C3
----
P(3 good) = 80C3/100C3 = 0.5081
-------------------------
Cheers,
Stan H.
--------------------