Please answer the question . What is the number of degrees of freedom that should be used for finding the critical value ta/2 ? Please fill in the blank which is df=___

Homework: Section 7.2 Homework Question 2, 7.2.2 HW Score: 8.89%, 0.8 of 9 points Part 1 of 3 Points: 0 of 1 Save Refer to the accompanying data display that results from a sample of airport data speeds in Mops. Complete parts (a) through (c) below. Click the icon to view a t distribution table. Tinterval (13.046,22.15) x = 17.598 Sx = 16.01712719 n = 50 a. What is the number of degrees of freedom th Critical t values of = (Type a whole number.) t Distribution: Critical t Values Left tail Area in One Tail 0.006 0.01 0.025 0.05 0.10 Degrees of Area in Two Tails Degrees of Freedom 0.01 0.02 0.05 0.10 0.20 Freedom 63.657 31.821 12.706 6.314 3.078 2 9.925 6.965 4.303 2.920 1.886 N 3 5.841 4.541 3.182 2.353 1.638 4.604 3.747 2.776 2.132 1.533 4.032 3.365 2.571 2.015 1.476 6 3.707 3.143 2.447 1.943 1.440 6 3.499 2.998 2.365 1.895 1.415 3.355 2.896 2.306 1.860 1.397 Critical t value 3.250 2.821 2.262 1.833 1.383 9 (negative) 10 3.169 2.764 2.228 1.812 1.372 10 11 3.106 2718 2.201 1.796 1.363 11 12 3.055 2.681 2.179 1.782 1.356 12 Textbook Statcrunch Get m 13 3.012 2.650 2.160 1.771 1.350 13 14 2.977 2.624 2.145 1.761 1.345 14