Find the critical value for the test of significance in each of the given information. 1. One-tailed test, o is known, a=0.05, n=34 2. Two-tailed test, o2 is known, a=0.05, n=45 3. One-tailed test, o is unknown, a = 0.05, n=14 4. Two-tailed test, o2 is unknown, a = 0.05, n=10 5. One-tailed test, o is known, a = 0.01, n=40 6. Two-tailed test, o is known, a = 0.01, n=50 7. One-tailed test, o2 is unknown, a = 0.01, n=16 8. Two-tailed test, o is unknown, a= 0.01, n=9 9. One-tailed test, o2 is known, a = 0.01, n=38 10. Two-tailed test, o2 is unknown, a = 0. 1, n=12