K Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance a, and sample size n Left-tailed test, a=0.01, n = 18 Click the icon to view the t-distribution table t-Distribution Table The critical value(s) is/are (Round to the nearest thousandth as needed. Use a comma to separate answers as needed) d.f. Level of confidence, c One tail, a Two tails, a 1 0.80 0.90 0.95 0.98 0.10 0.05 0.025 0.01 0.005 0.20 0.10 0.05 0.02 0.01 3.078 6.314 12.706 31.821 0.99 d.f. 63.657 2 1.886 2.920 4303 6.965 9.925 2 3 1.638 2.353 3.182 4.541 5.841 3 4 1.533 2.132 2776 3.747 4.604 4 5 1.476 2.015 2.571 3.365 4.032 5 6 1.440 1.943 2.447 3.143 3.707 1.415 1.895 8 1.397 1.860 2.306 7 3.499 2.365 2.998 2.896 3.355 8 9 1383 2.262 1.833 2.821 3.250 10 1372 1.812 2.228 2764 3.169 11 1363 1.796 2.718 2.201 3.106 12 1356 1.782 2.179 2.681 3.055 13 1.350 1.771 14 1.345 1.761 2.145 2.624 2.160 2.650 3.012 2.977 15 1341 1.753 2.131 2.602 2.947 16 1337 1.746 2.120 2.583 2.921 17 1.333 1.740 2.110 2.567 2.898 18 1330 1.734 2.101 2.552 2.878 1328 1.729 2.093 2.539 2.861