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 99%. Complete parts (a) and (b) below. a. Assume that p and q are unknown. n = 4162 (Round up to the nearest integer.) b. Assume that 22% of adults can wiggle their ears. n = (Round up to the nearest integer.)