2. One - tailed test a = 0.01 n= 20 Identify the test statistic and the 3. Two - tailed test critical value of the a = 0.10 n= 75 following: 4. One - tailed test 1. Two - tailed test a = 0.05 n= 15 a = 0.01 n= 55 5. Two- tailed test a = 0.05 n= 10