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.
-What is the pooled estimate of the population variance?

A) [(14 / 36) (6.5) ] + [(22 / 36) (4.5) ] = 5.28
B) [(15 / 38) (6.5) ] + [(23 / 38) (4.5) ] = 5.29
C) [(15 / 23) (6.5) ] + [(23 / 15) (4.5) ] = 11.14
D) [(14 / 22) (6.5) ] + [(22 / 14) (4.5) ] = 11.21