Chapter 8 Homework Score: 71/100 25/34 answered Question 27 A campaign staffer would like to estimate the proportion of likely voters who will vote for a particular candidate in the upcoming election. To help with this estimate, the staffer surveyed a small group of likely voters and found that 81% of the sample supported the candidate. How large a sample should be selected such that the margin of error of the estimate for a 99% confidence interval is at most 6%. Round the solution up to the nearest whole number. n Question Help: Video Submit