Mathematics, 26.03.2020 05:58 shhells
Leakage from underground gasoline tanks at service stations can damage the environment. It is estimated that 25% of these tanks leak. You examine 15 tanks chosen at random, independently of each other. a.What is the expected number of leaking tanks in such samples of 15?b. What is the probability that fewer than 3 tanks will be found to be leaking?c. Now you do a larger study, examining a random sample of 2000 tanks nationally. What is the probability that at least 600 of these tanks are leaking?
Answers: 3
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Leakage from underground gasoline tanks at service stations can damage the environment. It is estima...
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