ul li1 Confidence Interval testing hypothesis hypothesis testing significance testing significant vs non-significanttotoro96@koreaackr Hypothesis error Truth DecisionH0 trueH0 false Retain H0 Correct retentionType II errorReject H0Type I errorCorrect rejection null hypothesis H0 Type I error 1 significance level 0 005 TreatmentSSTk-1 MST F=MSTMSEP 384 p-value=li ul