Statistics: T-test – #128


Question: Students were paired by matching their IQs and grades in previous mathematics courses taken. Group A attended lecture and did homework. Group B watched videotapes and did work on a computer. Test to see if there is a significant difference in final exam scores for 2 groups at the .05 level.

Lecture

95

87

91

85

81

79

74

73

71

69

Tapes

99

91

88

90

87

78

79

81

65

74

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