# 9.6: Chapter Formula Review

- Page ID
- 14703

**9.3** Distribution Needed for Hypothesis Testing

Sample size | Test statistic |
---|---|

(\(\sigma\) unknown) | \(t_{c}=\frac{\overline{X}-\mu_{0}}{s / \sqrt{n}}\) |

(\(\sigma\) known) | \(Z_{c}=\frac{\overline{X}-\mu_{0}}{\sigma / \sqrt{n}}\) |