SOLUTION: A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of twelve calculators is sent out cont

Question 1049175: A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of twelve calculators is sent out containing three defective calculators and nine working calculators. A customers buys five of these calculators, without testing them. A) what is the probability that all five are acceptable? B) what is the probability that two will be defective and three acceptable?
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
A) The probability that all five are acceptable is 9/12 x 8/11 x 7/10 x 6/9 x 5/8, or 0.15909.
B) Probability for 3 being acceptable is 9/12 x 8/11 x 7/10 x 3/9 x 2/8, or 0.0318181. ☺☺☺☺
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