Question

1. Hypothesis Testing between Two Independent Samples Research consistently shows that lack of self-control, a strong correlate of antisocial behavior, is greater in males than in females. Dr. Roh and his students randomly surveys 10 boys and 10 girls from a middle school and wants to find out whether boys do, in fact, report lower levels of self-control. Using the scores reported by the respondent below (on a scale from 0–20), test the null hypothesis that boys and girl have the same mean level of self-control. Boys Girls 10 18 13 14 8 15 15 10 7 14 12 8 13 16 10 8 9 11 17 15 Boys Girls n = 10 n = 10 mean = 11.4 mean = 12.9 SS = 9.04 SS = 10.69 1) Please write down the null and Dr. Roh’s research hypotheses. (2 points) 2) What is the critical t – value from t-table based on df and an alpha level of .05? (2 points) 3) What is your final decision? (1 point)

          1. Hypothesis Testing between Two Independent Samples
Research consistently shows that lack of self-control, a strong correlate of antisocial behavior, is greater in males than in females. Dr. Roh and his students randomly surveys 10 boys and 10 girls from a middle school and wants to find out whether boys do, in fact, report lower levels of self-control. Using the scores reported by the respondent below (on a scale from 0–20), test the null hypothesis that boys and girl have the same mean level of self-control.

Boys Girls
10 18
13 14
8 15
15 10
7 14
12 8
13 16
10 8
9 11
17 15

Boys Girls
n = 10 n = 10
mean = 11.4 mean = 12.9
SS = 9.04 SS = 10.69

1) Please write down the null and Dr. Roh’s research hypotheses. (2 points)
2) What is the critical t – value from t-table based on df and an alpha level of .05? (2 points)
3) What is your final decision? (1 point)

1. Hypothesis Testing between Two Independent Samples
Research consistently shows that lack of self-control, a strong correlate of antisocial behavior, is greater in males than in females. Dr. Roh and his students randomly surveys 10 boys and 10 girls from a middle school and wants to find out whether boys do, in fact, report lower levels of self-control. Using the scores reported by the respondent below (on a scale from 0–20), test the null hypothesis that boys and girl have the same mean level of self-control.

Boys Girls
10 18
13 14
8 15
15 10
7 14
12 8
13 16
10 8
9 11
17 15

Boys Girls
n = 10 n = 10
mean = 11.4 mean = 12.9
SS = 9.04 SS = 10.69

1) Please write down the null and Dr. Roh’s research hypotheses. (2 points)
2) What is the critical t – value from t-table based on df and an alpha level of .05? (2 points)
3) What is your final decision? (1 point)

Added by -Ngeles S.

Question

Please give Ace some feedback