| Minimum Sample Size | |
| Population Size | 20000 |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.5 |
| Population Variance | 13 |
| z(alpha/2) + z(beta) | 1.95996398454005 |
| z(alpha) + z(beta) | 1.64485362695147 |
| Minimum Sample Size (2 sided test) | 1997.89237596271 |
| Minimum Sample Size (1 sided test) | 1449.94729245012 |
| Minimum Sample Size (for Infinite Populations) | |
| Population Size | infinite |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.5 |
| Population Variance | 13 |
| z(alpha/2) + z(beta) | 1.95996398454005 |
| z(alpha) + z(beta) | 1.64485362695147 |
| Minimum Sample Size (2 sided test) | 2219.50954084549 |
| Minimum Sample Size (1 sided test) | 1563.20288458846 |
| Minimum Sample Size (Unknown Population Variance) | |
| Population Size | 20000 |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.5 |
| Population Variance | unknown |
| t(alpha/2) + t(beta) | 1.96115267419883 |
| t(alpha) + t(beta) | 1.64590594250899 |
| Minimum Sample Size (2 sided test) | 2000.07407518899 |
| Minimum Sample Size (1 sided test) | 1451.66842651734 |
| Minimum Sample Size (Infinite Population, Unknown Population Variance) | |
| Population Size | infinite |
| Margin of Error | 0.15 |
| Confidence | 0.95 |
| Power | 0.5 |
| Population Variance | unknown |
| t(alpha/2) + t(beta) | 1.96103386679928 |
| t(alpha) + t(beta) | 1.64582960687591 |
| Minimum Sample Size (2 sided test) | 2221.93332211282 |
| Minimum Sample Size (1 sided test) | 1565.05849925782 |
