Question: Use a z-table or t-table to find the critical value (or values) for each of the following

(a) \(\alpha =0.03\), two-tailed test

(b) Right-tailed test when \(\alpha =0.025\) and df = 12

(c) \(\alpha =0.02\), left tailed test

(d) Two-tailed test when \(\alpha =0.1\) and df = 19

(e) \(\alpha =0.04\), right-tailed test.