An experiment was conducted to compare the mean midterm grades for STAB23 Summer students, and STAB23 Fall students. The number of students that were sampled was 80 (40 from Fall and 40 from Summer). Below, the data from the two groups of students.

Two-Sample T-Test and CI: Difference = mu ( Summer ) - mu ( Fall Estimate for difference: -7. 06250 95%% lower bound for difference: -11.69503 T-Test of difference = 0 (vs >) : T-Value = P-Value = 0.006. DF = 73