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OpenStudy (anonymous):
There are an estimated 12,000 houses in a certain city. The city wanted to find out what percentage of houses have more than 1 floor. It did a survey of 400 households and found that 160 of them have more than 1 floor. What is the population size of this study?
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OpenStudy (minecrafter64):
@jbob20 are you there
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