SOLUTION: Suppose that a shipment of 120 electronic components contains 4 defective components to determine whether the shipment should be accepted, a quality control engineer randomly selec

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Question 345979: Suppose that a shipment of 120 electronic components contains 4 defective components to determine whether the shipment should be accepted, a quality control engineer randomly selects 4 of the components and test them. If 1 or more of the components is defective, the shipment is rejected. What is the probability that the shipment is rejected?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P(Bad)=4/120=1/30
P(Good)=29/30
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P(all 4 Good)=P(Good)*P(Good)*P(Good)*P(Good)
P(4G)=%2829%2F30%29%5E4=707281%2F810000=0.873
P(not 4G)=1-0.873=0.127
The probability of rejection is then P=0.127.