Find The t values for The following examples Upper tail area

Find The t value(s) for The following examples Upper tail area of .05 with 18 degrees of freedom? Lower tail area of .10 with 22 degrees of freedom Upper tail area of .01 with 5 degrees of freedom? 90% of The area is between these two t values with 95% of The area is between these two t values

Solution

a) t upper tail 0.05, 18 .. 1.734

b) Lower tail 0.01, 10   ... -2.764

c) upper tail 0.01, 5 ... 3.365

d) 90% area 14 df ... -1.771 to +1.771

e)95% 28df = -2.048 to +2.048