Two sections of a class in statistics were taught by two different methods. Students’

scores on a standardized test are shown in Table 5.12. Do the results present evidence of a difference in the effectiveness of the two methods? (Use

α = 0.05.)

Table 5.12 Data for Exercise 1 Class A Class B 74 76 78 79 97 75 92 76 79 82 94 93 88 86 78 82 78 100 71 69 93 94 85 84 70

 LO.1