A gasoline tank for a certain car is designed to hold 15

Chapter 0, Problem 7.76

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A gasoline tank for a certain car is designed to hold 15 gal of gas. Suppose that the variable x actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 15.0 gal and standard deviation 0.1 gal. a. What is the probability that a randomly selected tank will hold at most 14.8 gal? b. What is the probability that a randomly selected tank will hold between 14.7 and 15.1 gal? c. If two such tanks are independently selected, what is the probability that both hold at most 15 gal?

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