Scores of students taught with standard teaching method:
[1] 72 68 76 68 84 68 61 76
Scores of students taught with new teaching method:
[1] 77 74 82 73 87 69 66 80

        Paired t-test

data:  std and new 
t = -7.3438, df = 7, p-value = 0.0001568
alternative hypothesis: true difference in means is not equal to 0 
95 percent confidence interval:
 -5.78371 -2.96629 
sample estimates:
mean of the differences 
                 -4.375