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Three Different Brands of Tires Were Compared for Wear Characteristics

Question 94

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Three different brands of tires were compared for wear characteristics.From each brand of tire,ten tires were randomly selected and subjected to standard wear-testing procedures.The average mileage obtained for each brand of tire and sample variances (both in 1,000 miles)are shown below.
Three different brands of tires were compared for wear characteristics.From each brand of tire,ten tires were randomly selected and subjected to standard wear-testing procedures.The average mileage obtained for each brand of tire and sample variances (both in 1,000 miles)are shown below. At 95% confidence,test to see if there is a significant difference in the average mileage of the three brands.
At 95% confidence,test to see if there is a significant difference in the average mileage of the three brands.

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