(Solved): Determine the upper-tail critical value t/2 in each of the following circumstances. a. 1= ...

Determine the upper-tail critical value $t_{?/2}$ in each of the following circumstances. a. $1??=0.95,n=21$ d. $1??=0.95,n=38$ b. $1??=0.99,n=21$ e. $1??=0.90,n=69$ c. $1??=0.95,n=63$ Click here to view page 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. a. $t=$ (Round to four decimal places as needed.) Critical Values for the $t$ Distribution (Page 1) Critical Values for the $t$ Distribution (Page 2)