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 the standard deviation of the distribution of the difference between means is 0.76,what is the t score?

A) (15 - 23) / 0.76 = -10.53
B) (0.76) (15 - 23) = -6.08
C) [(6.5 + 4.5) / 2] [0.76] = 4.18
D) (55 - 51) / 0.76 = 5.26