Determine the upper-tail critical value to: ,2 in each of the following circumstances. a. 1 -0c=0.90, n=63 b.1-0c=0.95, n=63 c. 1 -0c=0.90, n=57 Click here to view [ge 1 of the table of critical values for the t distribution. Click here to view page 2 of the table of critical values for the t distribution. E> a. t= D (Round to four decimal places as needed.) b. t = D (Round to four decimal places as needed.) c. t= D (Round to four decimal places as needed.)