Answer to Question #218700 in Statistics and Probability for Kyy

Question

An exam was given to two classes consisting of 40 and 50 students, respectively. The first class attended lectures twice per week, while the second class attended one lecture and a recitation with a teaching assistant. In the first class the mean grade was 74(SD=8), while the second class had a mean grade of 78(SD=7). Conduct the appropriate appropriate t-test to determine if there is a significant difference between the performance of the two classes at the a=.05 level.

I need the pooled sample variance…?

t test statistic…?

standard error…?

95% confidence interval…?

calculate Cohens D…?