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How many registered voters should be sampled

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A member of Congress wants to determine her popularity in a certain part of the state. She indicates that the proportion of voters who will vote for her must be estimated within plus or minus 2 percent of the population proportion. Further, the 0.95 degree of confidence is to be used. In past elections, the representative received 40% of the popular vote in that area of the state. She doubt whether it has changed much. How many registered voters should be sampled?

Reference no: EM132855828

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