You are testing if there is a difference between 2 population means with unknown and unequal population standard deviations. You were given 2 independent samples. The calculated degrees of freedom came to be 16.9. If the level of significance is.10, what is the critical value? 80% 90% 0.10 6.05 Conndence Tetra 05% 98% Level of Significance for One-Talled Test, 0.025 6.01 Level of Significance for Two-Talled Test, 09.916 0.005 6.0005 0.20 6.10 0.05 6.02 6.01 0.001 3.078 6.314 12.706 31.521 63.657 636.619 2 1.556 2.920 4.303 6.965 9.925 31.599 3 1.638 2.353 3.182 4.541 5.841 12.924 4 1.533 2.132 2.776 3.747 4.604 5.610 $ 1.476 2.019 2.571 3.365 4.032 6.369 6 1.440 1.943 2.447 3.143 3.707 5.959 7 1415 1.895 2.365 2.998 3.499 5.400 $ 1.397 1.360 2.306 2.896 3.355 5.041 9 1.353 1.833 2.262 2.821 3.250 4.781 10 1.372 1.812 2.228 2.764 3.169 4.587 11 1.363 1.796 2.201 2.718 3.106 4.437 12 1.356 1.782 2.179 2.681 3.055 4.313 13 1.350 1.771 2.160 2.650 3.012 4.221 14 1.345 1.761 2.145 2.624 2.977 4.140 15 1.341 1.753 2.131 2.602 2.947 4.073 16 1.337 1.746 2.120 2.583 2.921 4.015 17 1.333 1.740 2.110 2.567 2.89$ 3.965 IS 1.330 1.734 2.101 2.552 2.$78 3.922 9. 19 1.328 1.729 2.093 2.539 2.861 3.883 20 1.325 1.725 2.036 2.528 2.845 3.$50 a. 1.812 O b. 1.740 O c. 1.746 O d. 2.120