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Review case study of the oil companies

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Reference no: EM131694396

Question: During the sharp increase in gasoline prices in the summer of the year 2006, oil companies claimed that the average price of unleaded gasoline with minimum octane rating of 89 in the Midwest was not more than $3.75. If you want to test this claim, how would you set up the null and alternative hypotheses?

Reference no: EM131694396

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