Determining the interval estimate

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Interval Estimate of μ1 - μ2 : Small  Sample

A manager is thinking of providing, on a regular basis, in-house training for employees preparing for an inventory management certification exam. In the past, some employees received the in-house training before taking the exam, while others did not. Independent random samples taken from the company's records provided the following exam scores for 10 workers who did not receive in-house training and 8 workers who did receive training.

No Training

Training

76

80

80

66

60

71

91

79

73

94

77

74

82

83

68

78

75

 

86

 

Develop a 95% confidence interval estimate for the difference between the average test scores for the populations of employees.

Hypothesis Test about μ1 - μ2 : Small  Sample

Refer to the certification exam score data in Exercise 2. Using α = 0.05, test for any difference between the average test scores for the two populations of employees.

Reference no: EM131061979

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