i 0 Question 10 v U ' , A pollster wishes to estimate, with 95% confidence, the proportion of people who who believe that the United Nations is doing a good job of solving problems. Find the minimum sample size necessary to achieve a margin of error of less than 3%. a. Assuming no previous estimates are available. Round your answer up to the next integer. ! 1 e b. Assuming a previous estimate of 0.70. Round your anSWer up to the next integer. l J