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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?
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Mathematics, 21.06.2019 21:30, myhomeacc32
Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?
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Leakage from underground gasoline tanks at service stations can damage the environment. It is estima...
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