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Question 1182619:
Found 3 solutions by Theo, ikleyn, 121421:
Answer by Theo(13342)   (Show Source):
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the probability that a well, taken at random, will yield deposits of natural gas is .05.
the probability that it won't = 1 minus .05 = .95
the probability that 0 out of 6 wells will yield deposits of natural gas is equal to .95^6.
the probability that at least 1 will yield deposits of natural gas is 1 minus that = 1 minus .95^6 = .2649081094.

Answer by ikleyn(52778)   (Show Source):
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.
An oil exploration firm finds that 5% of the test wells it drills yield deposit of natural gas.
If it drills 6 wells, find the probability that at least one well will yield gas.
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P = = 0.2649 (approximately). ANSWER It is the COMPLEMENT to the event that all 6 wells do not yield deposit of natural gas.

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Answer by 121421(1)   (Show Source):
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