Leaking gas tanks. Leakage from underground gasoline tanks at service stationscan damage
Chapter 0, Problem 13.32(choose chapter or problem)
Leaking gas tanks. Leakage from underground gasoline tanks at service stationscan damage the environment. It is estimated that 25% of these tanks leak. Youexamine 15 tanks chosen at random, independently of each other.(a) What is the mean number of leaking tanks in such samples of 15?(b) What is the probability that 10 or more of the 15 tanks leak?(c) Now you do a larger study, examining a random sample of 1000 tanksnationally. What is the probability that at least 275 of these tanks are leaking?
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