The average number of miles (in thousands) that a car's tire will function before needing replacement is 73 and the standard deviation is 17. Suppose that 15 randomly selected tires are tested. Round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of X? X - N b. What is the distribution of ? - N c. If a randomly selected individual tire is tested, find the probability that the number of miles (in thousands) before it will need replacement is between 71.6 and 78.1. مي مي

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