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11- Each car in the United States must publish their fuel efficiency (mpg). Subaru sold 125,000 Outbacks in 2018. Subaru samples 22 Outbacks and calculates

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Each car in the United States must publish their fuel efficiency (mpg). Subaru sold 125,000 Outbacks in 2018. Subaru samples 22 Outbacks and calculates a sample mean of 35 mpg on the highway with a sample standard deviation of 2 mpg. Subaru wants a confidence level of 99%.

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