Use the confidence interval explorers to select a study sample size to obtain an interval estimate with prespecified characteristics.
For interval estimation, select DOE > Sample Size Explorers > Confidence Intervals:
• Confidence Interval for One Sample Mean
• Confidence Interval for One Sample Proportion
• Confidence Interval for One Sample Variance
• Confidence Interval for One Sample Counts per Unit
• Confidence Interval for Two Independent Sample Means
• Confidence Interval for Two Independent Sample Proportions