You wish to test the following claim {Ha}: at a significance level of ct = 0.01. Ham 2 T13 Ham 1'} T13 You believe the population is norr'nall'j.r distributed, but you do not know the standard deviation. You obtain the following sample of data: What is the critical value for this test? [Report answer accurate to three decimal places.] critical value = What is the test statistic for this sample? [Report answer accurate to three decimal places.] test statistic = 2.55 x The test statistic is