From an English class of 18 students using programmed materials, 10 are selected at random and given additional instruction by the teacher. The results on the final examination were as follows: Grades in the  Final Examination With Additional Instruction No Additional Instruction 87 75 91 78 85 81 80 85 86 72 85 80 81 81 85 85 73   79

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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From an English class of 18 students using programmed materials, 10 are selected at random and given additional instruction by the teacher. The results on the final examination were as follows:

Grades in the  Final Examination

With Additional Instruction

No Additional Instruction

87

75

91

78

85

81

80

85

86

72

85

80

81

81

85

85

73

 

79

 

Test at 0.01 level of significance to find out if the additional instruction affects the average grade assuming that the data is normal. Use 2 decimal places

 

Determine the following: 

Method to be used in solving: 

Computed Value: 

Tabular Value:

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