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1 The mean life of a tire is 30 000 km The standard deviation is...

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Algebra

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1 The mean life of a tire is 30 000 km The standard deviation is 2 000 km a 68 of all tires will have a life between c What percent of the tires will have a life that exceeds 26 000 km b 95 of all tires will have a life between d If a company purchased 2 000 tires how many tires would you expect to last more than 28 000 km

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