What was the planned margin of error for the june poll

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Reference no: EM131456401

Question: A poll for the presidential campaign sampled 491 potential voters in June. A primary purpose of the poll was to obtain an estimate of the proportion of potential voters who favored each candidate. Assume a planning value of p* = .50 and a 95% confidence level.

a. For p*= .50. what was the planned margin of error for the June poll?

b. Closer to the November election. better precision and smaller margins of error are desired. Assume the following margins of error are requested for surveys lobe conducted during the presidential campaign. Compute the recommended sample size for each survey.

Reference no: EM131456401

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