Joe, I think you are understanding confidence intervals, but I am not sure I am understanding your comments. So, let me restate them a bit. A 95% confidence interval means that if you repeat exactly… A bigger hoop is better: why confidence intervals get wider as the confidence increases
If you are conducting a survey, you will need to decide on the number of people you need to sample. That, of course, depends upon how confident you want to be and how accurately you… Minimum Sample Size Calculator for Population Proportion Confidence Interval
Although we normally start with the confidence level, C, we want for our confidence interval, sometimes you need to work backwards from the margin of error, E, and find the confidence level, In this problem,… Find Confidence Level, C, for Population Proportion Confidence Interval