Of the proportion z2 n p p 1 n is the margin of error

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Unformatted text preview: size p (1 − p ) is the standard error of the proportion α z2 n p( − p) 1 n is the margin of error Population Proportion KEY IDEA: Interval estimate is the point estimate ± value from probability distribution Interval error— multiplied by standardEstimate this is a reoccurring formula. of a Population Proportion p ±m argin of error p ± zα 2 p( − p) 1 n p is the sample proportion (point estimate for population proportion) α is the level of significance Interval Estimation ◦ (1–α) is the confidence coefficient zα/2 is the z value providing an area of α/2 in the upper tail of the standard normal probability distribution n is the sample size p (1 − p ) is the standard error of the proportion α z2 n p( − p) 1 n is the margin of error Population Proportion SAFETY CHECK: You cannot use CONFIDENCE.NORM to find the margin of error: there is no CONFIDENCE function Population Proportion in MS Excel for proportions. Interval Estimate of a p ±m argin of error p ± zα 2 p( − p) 1 n p is the sample proportion (point estimate for population proportion) α is the level of significance Interval Estimation ◦ (1–α) is the confidence coefficient zα/2 is the z value providing an area of α/2 in the upper tail of the standard normal probability distribution n is the sample size p (1 − p ) is the standard error of the proportion α z2 n p( ...
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This document was uploaded on 03/05/2014.

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