SOLUTION: A box contains 11 transistors , 5 of which were defective. If 5 are selected at random, find the probability that. A: All are defective B: None are defective

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Question 1008668: A box contains 11 transistors , 5 of which were defective. If 5 are selected at random, find the probability that.
A: All are defective
B: None are defective
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P(defective)=5/11
P(not_defective)=6/11
So, all defective,
P=%285%2F11%29%285%2F11%29%285%2F11%29%285%2F11%29%285%2F11%29=3125%2F161051
.
.
All not defective,
P=%286%2F11%29%286%2F11%29%286%2F11%29%286%2F11%29%286%2F11%29=7776%2F161051
.
.