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It is claimed that an automobile is driven on the average less than 20,000 miles per year. To test this claim, a random sample of
It is claimed that an automobile is driven on the average less than 20,000 miles per year. To test this claim, a random sample of 25 automobiles owner are asked to keep a record of miles they travel. Would you agree with this claim if the random sample showed an average of 16,500 miles and a standard deviation of 3,900 miles? Use a 0.01 level of significance
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