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A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 25 voters found
A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 25 voters found that 21 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 90% interval with a margin of error equal to 0.06 to estimate the proportion.
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