9. Approximately what is the actual standardized effect size, d, for the mean differences between genders? (use the average standard deviations for the groups in place of the pooled standard deviation)

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Use the SPSS Output below to answer questions 9 and 10
Independent Samples T-Test # 1
Group Statistics
Gender
Mean
Std. Deviation
Std. Error Mean
Final Exam %
Male
23
71.222
14.1632
2.9532
Female
23
78.983
12.2024
2.5444
Independent Samples Test
Levene's Test
for Equality of
Variances
t-test for Equality of Means
95% Confidence
Interval of the
Difference
Sig.
(2-tailed)
Mean
Difference
Std. Error
Difference
Sig.
df
Lower
Upper
Final Exam %
Equal variances
assumed
.517
.476
-1.991
44
.053
-7.7609
3.8981
-15.6171
.0953
Equal variances
not assumed
-1.991
43.058
.053
-7.7609
3,8981
-15,6219
.1002
9. Approximately what is the actual standardized effect size, d, for the mean differences between
genders? (use the average standard deviations for the groups in place of the pooled standard deviation)
Transcribed Image Text:Use the SPSS Output below to answer questions 9 and 10 Independent Samples T-Test # 1 Group Statistics Gender Mean Std. Deviation Std. Error Mean Final Exam % Male 23 71.222 14.1632 2.9532 Female 23 78.983 12.2024 2.5444 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Difference Sig. (2-tailed) Mean Difference Std. Error Difference Sig. df Lower Upper Final Exam % Equal variances assumed .517 .476 -1.991 44 .053 -7.7609 3.8981 -15.6171 .0953 Equal variances not assumed -1.991 43.058 .053 -7.7609 3,8981 -15,6219 .1002 9. Approximately what is the actual standardized effect size, d, for the mean differences between genders? (use the average standard deviations for the groups in place of the pooled standard deviation)
10. The 95% confidence interval for the mean FOR MALES (using the appropriate t critical value to 3
decimal places) for the variable FINAL EXAM % is
Transcribed Image Text:10. The 95% confidence interval for the mean FOR MALES (using the appropriate t critical value to 3 decimal places) for the variable FINAL EXAM % is
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