Test: POST UNIT 6 - TEST - Ch. 9 Question 9 Determine the t-value in each of the cases. Click the icon to view the table of areas under the t-distribution. (a) Find the t-value such that the area in the right tail is 0. 10 with 20 degrees of freedom. (Round to three decimal places as needed. ) (b) Find the t-value such that the area in the right tail is 0.01 with 24 degrees of freedom. (Round to three decimal places as needed ) (c) Find the t-value such that the area left of the t-value is 0.005 with 17 degrees of freedom. [Hint: Use symmetry. ] (Round to three decimal places as needed.) (d) Find the critical t-value that corresponds to 50% confidence Assume 10 degrees of freedom. N (Round to three decimal places as needed. )