In: Statistics and Probability
Consider a simple poll that is measuring the proportion of citizens that hold a particular political belief. What is a conservative, "worst case scenario" sample size if you want the margin of error to be 5.7%?
The margin of error = 5.7% or 0.057 and we take the liberty of putting significance level of 0.05
If we want to be more conservative, and take significance level to be 0.01, then