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Mathematics 16 Online
OpenStudy (kikibear):

The automatic ticket machines at a railroad station are programmed to ask every seventh ticket buyer on a given day if he or she would buy snacks on the train if snacks were available. Of the 316 people shown this question, 198 of them answered yes. Based on this sample, about how many of the regular 2200 daily passengers would buy snacks on the train?

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