When planning experiments or studies, use the Sample Size Explorers to answer questions like these:
• How many units should I test?
• Will I be able to detect a difference in my treatment means?
• How many samples are needed to construct an interval with a specified width?
• How many units must I test to estimate failure time?
The Sample Size Explorers are a collection of interactive utilities that enable you to adjust study parameters and assumptions to explore different study designs. The tools are grouped by use:
• Power for hypothesis testing.
• Confidence intervals for interval estimation.
• Reliability demonstrations.
Figure 28.1 Sample Size Explorer for One Sample Mean