Calculate the margin of error for a survey or test based on the sample size and the population.
  Choose the Confidence Level you want (90%, 95%, 99%).
  Confidence Level SD  
  Sample Size  
  Enter the size of the Finite Universe (how many people are in the group your sample represents)  
  Enter the Percentage of Population (set to default value of 50%) %
  Confidence Interval (Margin of Error)