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: ethnics group A: N =15 M=55 S2= 6.5 ethnic group B: N=23 M=51 S2= 4.5 Using the .05 significance level, did the two ethnic differ on the role approval index?

howard, fine, & howard is an advertising agency. the firm uses an activity-based costing system to allocate overhead costs to its services. information about the firm's activity cost pool rates follows: stooge company was a client of howard, fine, & howard. recently, 7 administrative assistant hours, 3 new ad campaigns, and 8 meeting hours were incurred for the stooge company account. using the activity-based costing system, how much overhead cost would be allocated to the stooge company account?