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You are running a political campaign and wish to estimate, with 95% confidence, the population proportion of registered voters who will vote for your candidate.

You are running a political campaign and wish to estimate, with 95% confidence, the population proportion of registered voters who will vote for your candidate. Your estimate must be accurate within 3% of the population proportion. Find the minimum sample size needed when no preliminary estimate is available

A. 814

B. 950

C. 914

D. 850

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