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A component in a music system has a life expectancy of 2,400 hours with a standard deviation of 300 hours. If an average person listens

A component in a music system has a life expectancy of 2,400 hours with a standard deviation of 300 hours. If an average person listens to music for 1,000 hours in a year, what is the probability that the component lasts for more than 3 years is approximately %.

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