Probabilities Associated with Hypothesis Testing
| Truth | ||
| Result of statistical test | H0 is true | H0 is false (HA holds) |
| Fail to reject H0 | Correct decision | Type II error (β) |
| Reject H0 | Type I error (α) | Correct decision (1 − β) |
H0 = the null hypothesis; HA = the alternative hypothesis.