SOLUTION: A box contains 12 connectors, 9 good ones and 3 defective ones. What is the probability of obtaining exactly 2 good and 1 defective connector in drawing 3 parts from the box with r

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Question 928174: A box contains 12 connectors, 9 good ones and 3 defective ones. What is the probability of obtaining exactly 2 good and 1 defective connector in drawing 3 parts from the box with replacement?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
12 connectors: 9G, 3def
drawing 3 parts from the box with replacement
P(2G And 1def) = %289%2F12%29%289%2F12%29%283%2F12%29+=+%283%2F4%29%283%2F4%29%281%2F4%29 = 9/64