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. 2015 Jun 30;40(3):249–252. doi: 10.5395/rde.2015.40.3.249

Table 1. Possible results of hypothesis testing.

Conclusion based on data Truth
H0 True H0 False
Reject H0 Type I error (α) Correct conclusion (Power = 1 - β)
Fail to reject H0 Correct conclusion (1 - α) Type II error (β)