Answer Happy

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 0.025 with 19 degrees of freedom. (Round to three decimal places as needed.) (b) Find the t-value such that the area in the right tail is 0.15 with 5 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 0.01 with 25 degrees of freedom. (Hint: Use symmetry.] (Round to three decimal places as needed.) (d) Find the critical t-value that corresponds to 80% confidence. Assume 17 degrees of freedom. (Round to three decimal places as needed.)