1. If n=28, x¯ (x-bar)=50, and s=6, find themargin of error at a 95% confidence level (use at least two decimalplaces)
2. What is the margin of error for a poll witha sample size of 2400 people? Round your answer to the nearesthundredth of a percent.
%
3. If you want a poll to have a margin of errorof 3.24%, how large will your sample have to be? Round your answerto the nearest whole number.
__people
