3 Using the t-distribution table posted on Moodle, find the df & critical t-values given N & the confidence level: N 30, 90% confidence level b

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3 Using the t-distribution table posted on Moodle, find the df & critical t-values given N & the confidence level: N 30, 90% confidence level b. N 17, 90% confidence level c. N 23, 95% confidence level d. N 42, 99% confidence level e. N o 1,95% confidence level a.
t-distribution Table TABLE D Thet distribution* Confidence interval percents (two-tailed) 80% 90% 95% 98% 99% 99.9% a level for two-tailed test 20 .10 .05 02 01 .001 a level for one-tailed test df 10 .05 025 01 005 .0005 3.078 1 6.314 12.71 31.82 63.66 9.925 636.6 2 1.886 2.920 2.353 4.303 6.965 4.541 31.598 3 1.638 3.182 2.776 5.841 12.924 8.610 4 1.533 2.132 2.015 3.747 4.604 4.032 5 1.476 1440 2.571 2.447 2.365 3.365 3.143 6.869 1.943 3.707 3.499 3.355 5.959 1.415 1.397 1.383 1.895 1.860 2.998 5.408 8 2.306 2.896 2.821 5.041 1.833 1.812 1.796 1.782 1.771 2.262 2.228 2.201 2.179 3.250 4.781 4.587 10 3.169 1.372 2.764 11 1.363 1.356 1.350 2.718 3.106 3.055 3.012 4.437 12 2.681 2.650 2.624 4.318 13 14 2.160 2.145 4.221 4.140 1.345 1.761 2.977 15 16 17 18 1.341 1.337 1.753 1.746 2.131 2.120 2.110 2.602 2.583 2.567 2.947 2.921 4.073 4.015 3.965 1.333 1.330 1.328 1.325 1.740 1.734 1.729 1.725 2.898 2.878 2.101 2.552 2.539 2.528 3.922 2.093 2.086 2.080 19 2.861 2.845 3.883 20 3.850 3.819 21 1.323 1721 2.518 2.508 2.500 2.831 22 1.321 1.319 1.318 1.717 2.074 2.819 3.792 3.767 3.745 23 1.714 2.069 2.064 2.807 1.711 2.797 2.787 2.779 2.492 25 1.316 1.315 1.314 1.708 2.060 2.485 2.479 3.725 26 1.706 2.056 2.052 2.048 3.707 3.690 3.674 1.703 1701 1.699 1.697 2.473 2.771 28 1.313 1.311 1.310 2.467 2.763 2.756 2.750 2.045 2.042 2.021 2.462 2.457 3.659 30 40 3.646 3.551 1.303 1.299 1.684 1.676 2.423 2.403 2.390 2.704 2.678 50 60 80 2.009 2.000 1.990 3.496 3.460 3.416 1.296 1.671 2.660 1.292 1.664 1.660 2.374 2.639 2.626 2.617 100 120 1.290 1.289 1.282 1.984 1.980 1.960 2.364 2.358 2.326 3.390 3.373 1.658 1.645 2.576 3.291 *To be significant, the t obtained from the data must be equal to or greater than the value shown in the