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What is 95% Confidence Interval Calculations about?
This spreadsheet calculates confidence intervals for proportions using both normal approximation and exact binomial methods. It contains an example comparing the performance of a control and experimental group, showing the 95% confidence intervals for each. It also allows the user to input different numbers of defects and sample sizes to calculate the exact binomial confidence intervals and solve for the required sample size to achieve a given level of statistical improvement.
- Author
- sudhaacar
- Language
- EN