Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use
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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 3 percentage points and use a confidence level of 99%.
a. Assume that pn and qn are unknown.
b. Assume that 22% of adults can wiggle their ears (based on data from Soul Publishing).
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