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A fuel oil company claims that one-fourth of the homes in a certain city are heated by oil. Do we have reason to believe that

A fuel oil company claims that one-fourth of the homes in a certain city are heated by oil. Do we have reason to believe that more than 1/4 are heated by oil if, in a random sample of 1000 homes in this city, it is found 536 are heated by oil? Use a 0.01 level of significance.

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