Use the confidence interval explorers to select a study sample size to obtain an interval estimate with prespecified characteristics. Explore the impact of sample size on the margin of error of an interval estimate. You can also explore sample size requirements for:
• confidence, prediction, or tolerance intervals for one mean
• confidence intervals for two means
• confidence intervals for one or two proportions
• confidence intervals for one or two variances
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