Conduct the hypothesis tests for the given questions

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Reference no: EM131302910

Please conduct hypothesis tests for the following questions.

1) A research study was conducted to examine the efficacy of studying in groups. Students were randomly assigned to one of three groups: a single person group (individual studying), a group that had two study partners, and a group that had three study partners. After four weeks of studying, the students were given an exam. The raw scores are below. The data are presented below.

Group 1

Group 2

Group 3

78

82

74

87

79

86

76

82

86

65

83

85

92

81

95

78

90

94

77

89

86

88

79

71

85

83

88

92

81

85

2) Mr. Rotondo is concerned about the level of knowledge possessed by various majors regarding United States history. Students from various majors in the three academic areas of the College were asked to complete a standardized U.S. history exam. The Academic area for students was also recorded. Data in terms of percent correct is recorded below for 30 students.

Natural Science

Social Science

Humanities

62

82

80

81

92

87

75

81

87

88

80

74

67

72

88

68

71

79

76

68

82

86

76

85

82

68

72

76

86

65

3) A genetics engineer was attempting to cross a tiger and a cheetah. She crossed 150 tigers and cheetahs. Based on prior research she expected that 25% of the animals would have a phenotypic outcome of stripes only: 25% would have 3 spots only: and 50% would have both stripes and spots. When the cross was performed and she counted the individual cubs she found 45 with stripes only, 41 with spots only and 64 with both.

Reference no: EM131302910

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