It Is Claimed That Automobiles Are Driven On Average More Than 20 000 Km Per Yea
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It is claimed that automobiles are driven on average more than 20,000 Km per year. To test this claim, 100 randomly selected automobile owners are asked to keep a record of the kilometers they travel. Would you agree with this claim if the random sample showed an average of 23,500 Km and a standard deviation of 3,900 kilometers? Use a 0.01 level of significance.
