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A tire manufacturer advertises, the median life of our new all-seasonradial tire is 120,000 kms. An immediate adjustment will be made on any tire that

A tire manufacturer advertises, "the median life of our new all-seasonradial tire is 120,000 kms. An immediate adjustment will be made on any tire that does not last 120,000 kms." You purchased four of these tires. What is the probability that all four tires will wear out before traveling 120,000 kms?

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