1. What must be true about the sampling method and the values of p and n in order to construct a confidence interval for a proportion? [3 bullets] 2. Why is 0.5 used in place of p when determining the minimum sample size necessary for a proportion confidence interval? [2 sentences] 3. Why should you be wary of surveys that do not report a margin of error? [2 sentences] 4. Why is used in the margin of error formula? Where does it come from? [3 sentences] pq n

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