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Find the sample size needed to estimate the percentage of adults who can wiggle their ears . Use a margin of error of 2 percentage

Find the sample size needed to estimate the percentage of adults who can wiggle their ears . Use a margin of error of 2 percentage points and use a confidence level of 95% Complete parts (a) and (b) below .

a. Assume that p and q are unknown. n= (Round up to the nearest integer.)

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