6.Stereotype threat refers to the fact that members of a stereotyped group often feel extra pressure in situations where their behavior can confirm the negative reputation that their group lacks a valued ability. This feeling of stereotyped threat is then hypothesized to affect performance generally by lowering it from what it had been had the individual not been threatened. The data below are from an experiment done with white males. Two independent groups of college students who were known to excel in math and for whom doing well in math was important. Eleven subjects assigned to a control group completed a difficult math exam. Twelve subjects were assigned to the second group which was the threat condition. They were told that Asian students typically did better than other students in math tests and that the purpose of the experiment was to help the experimenter find out why this difference exists. The author reasoned that simply telling white students that Asians did better on math tests would arouse feelings of stereotype threat and diminish the student's performance. The data are presented below. Does stereotype threat change math performance in white males?

(1)State the null hypothesis (use the language of the problem)

(2)State the alternative hypothesis (non directional use the language of the problem -).

Control SubjectsThreat subjects

4, 9, 13, 9, 13, 77,6,5,8,9,0

12,12,6, 8,137,7,10,2,10,8

Xcon=Xcon²=Xthreat =X²_threat=

Show all of your work. Do not just show the answer show the components that went into the answer along with the answer.

(3)SScon = (2) SSthreat =

T=

(4)Compute omega squared and tell me what your value of omega squared means in the words of the problem

Omega squared =

(5)Cohen's d

Pooled variability=

Cohen's d =

(6) Conclusions (report your conclusions in the words of the problem)