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A consumer group conducted a study of SUV owners to estimate the mean highway mileage for...

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Basic Math

A consumer group conducted a study of SUV owners to estimate themean highway mileage for their vehicles. A simple random sample of91 SUV owners was selected, and the owners were asked to reporttheir highway mileage. The following results were summarized fromthe sample data.

Sample Mean = 21.3 mpg

Standard Deviation = 6.3 mpg

Based on these sample data, compute and interpret a 90%confidence interval estimate for mean the highway mileage forSUVs.

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Solution Given thatPoint estimate sample mean 213sample standard deviation s 63sample    See Answer
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