Increasing significance level a 1. Increases the chance of a type I error and increases the power of a test "HO: Mean = value" is rejected if: If either test statistic positive cri 2. value A one-sided test with upper reject region does not reject HO if: 3. Test statistic > positive critical value "HO: Mean negative critical value "HO: Mean 2 value" is rejected if: 7. Decreases the chance of a type I and increases the chance of a type II error