Researchers are trying to determine whether exercise is associated with a change in metabolic rate. They measure metabolic rate at baseline and after six weeks of exercise in the same 15 participants. A two-tailed t-test is performed with at a significance level of a = 0.02 . What is the decision rule for this test based on the t-statistic? O t 2 2.264 O It) 2 2.264 O t2 2.624 O It 2 2.624 O t2 2.602 O It) 2 2.602