| Minimum Sample Size | |
| Population Size | 21 |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.15 |
| Population Variance | 13 |
| z(alpha/2) + z(beta) | 2.99639737403384 |
| z(alpha) + z(beta) | 2.68128701644526 |
| Minimum Sample Size (2 sided test) | 20.919347380442 |
| Minimum Sample Size (1 sided test) | 20.8993727041744 |
| Minimum Sample Size (for Infinite Populations) | |
| Population Size | infinite |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.15 |
| Population Variance | 13 |
| z(alpha/2) + z(beta) | 2.99639737403384 |
| z(alpha) + z(beta) | 2.68128701644526 |
| Minimum Sample Size (2 sided test) | 5187.51839557866 |
| Minimum Sample Size (1 sided test) | 4153.81781507792 |
| Minimum Sample Size (Unknown Population Variance) | |
| Population Size | 21 |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.15 |
| Population Variance | unknown |
| t(alpha/2) + t(beta) | 3.15063540721813 |
| t(alpha) + t(beta) | 2.78930035298091 |
| Minimum Sample Size (2 sided test) | 20.927023953073 |
| Minimum Sample Size (1 sided test) | 20.9069813718543 |
| Minimum Sample Size (Infinite Population, Unknown Population Variance) | |
| Population Size | infinite |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.15 |
| Population Variance | unknown |
| t(alpha/2) + t(beta) | 2.99695850394025 |
| t(alpha) + t(beta) | 2.68178345519841 |
| Minimum Sample Size (2 sided test) | 5189.46149184076 |
| Minimum Sample Size (1 sided test) | 4155.35611144386 |
