For the following question(s): A sociologist interested in cultural differences compared women of two ethnic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results were as follows:
Ethnic Group A: N = 15 M = 55 S 2 = 6.5
Ethnic Group B: N = 23 M = 51 S 2 = 4.5
-If you conduct a t test for independent means, how many degrees of freedom are in the t distribution?
A)(15-1)+ (23-1)= 36
B)15 + 23 = 38
C)(15 + 23)-1 = 37
D)(15 + 23)/2 = 19

Question

For the following question(s): A sociologist interested in cultural differences compared women of two ethnic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results were as follows:
Ethnic Group A: N = 15 M = 55 S 2  = 6.5
Ethnic Group B: N = 23 M = 51 S 2  = 4.5
-If you conduct a t test for independent means, how many degrees of freedom are in the t distribution?
A)(15-1)+ (23-1)= 36
B)15 + 23 = 38
C)(15 + 23)-1 = 37
D)(15 + 23)/2 = 19

Quizplus · Accepted Answer

The degrees of freedom for a t-test for independent means is calculated by adding the number of participants in each group and then subtracting 2 (one for each group). Therefore, (15-1) + (23-1) = 14 + 22 = 36.

For the Following Question(s): a Sociologist Interested in Cultural Differences