A Social Psychologist Interested in Cultural Differences Compared Women of Two

Multiple Choice

A social psychologist interested in cultural differences compared women of two ethnic groups on a Role Approval Index on which high scores indicated high degrees of approval of one's own social role. The results were as follows.
-If a t test for independent means is conducted,how many degrees of freedom will be used to locate the cutoff score in the t table?

A) (15 - 1) + (23 - 1) = 36
B) 15 + 23 = 38
C) (15 + 23) - 1 = 37
D) (15 + 23) / 2 = 19