The IQ test scores of 74 seventh-grade girls in a midwestern school district are given. Test Scores 115 111 97 112 104 106 113 109 113 128 128 118 113 124 127 136 106 123 124 126 116 127 119 97 102 110 120 103 115 93 123 119 110 110 107 105 105 110 90 114 106 114 100 104 103 105 111 108 130 120 89 102 91 114 114 132 111 128 118 119 86 107 100 111 103 107 112 107 103 98 96 112 112 93 To access the data, click the link for your preferred software format. CSV Excel (xls) Excel (xlsx) JMP Mac-Text Minitab14-18 Minitab18+ PC-Text R SPSS TI CrunchIt! These 74 girls are an SRS of all seventh-grade girls in the school district. Suppose that the standard deviation of IQ scores in this population is known to be o = 11. Data provided by Darlene Gordon from her PhD dissertation, "Relationships among academic self-concept, academic achievement, and persistence with self-attribution, study habits, and perceived school environment," Purdue University, 1997.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter7: Percents
Section: Chapter Questions
Problem 2PTTS
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Chapter 16-10 

Macmillan Learning
The IQ test scores of 74 seventh-grade girls in a midwestern school district are given.
Test Scores
115 111 97 112 104
118 113 124 127 136
119 97 102 110 120
110 107 105 105 110
89 102 91 114 114
132 111 128 118 119
107 103 98 96 112 112 93
112
To access the data, click the link for your preferred software format.
CSV Excel (xls) Excel (xlsx) JMP Mac-Text Minitab14-18 Minitab18+ PC-Text R SPSS TI CrunchIt!
106 113 109 113 128 128
106 123 124 126 116 127
103 115 93 123 119 110
90 114 106 114 100 104
103 105 111 108 130
86 107 100 111 103 107
120
These 74 girls are an SRS of all seventh-grade girls in the school district. Suppose that the standard deviation of IQ scores in
this population is known to be o = 11.
Data provided by Darlene Gordon from her PhD dissertation, "Relationships among academic self-concept, academic achievement, and persistence with
self-attribution, study habits, and perceived school environment," Purdue University, 1997.
Estimate the mean IQ score for all seventh-grade girls in the school district, using a 96% confidence interval. Follow the
four-step process. Give your answer as an interval in the form (lower bound, upper bound). Give your numbers to two decimal
places. Use software or Table C if necessary.
confidence interval:
Incorrect
(107.43,114.03)
Transcribed Image Text:Macmillan Learning The IQ test scores of 74 seventh-grade girls in a midwestern school district are given. Test Scores 115 111 97 112 104 118 113 124 127 136 119 97 102 110 120 110 107 105 105 110 89 102 91 114 114 132 111 128 118 119 107 103 98 96 112 112 93 112 To access the data, click the link for your preferred software format. CSV Excel (xls) Excel (xlsx) JMP Mac-Text Minitab14-18 Minitab18+ PC-Text R SPSS TI CrunchIt! 106 113 109 113 128 128 106 123 124 126 116 127 103 115 93 123 119 110 90 114 106 114 100 104 103 105 111 108 130 86 107 100 111 103 107 120 These 74 girls are an SRS of all seventh-grade girls in the school district. Suppose that the standard deviation of IQ scores in this population is known to be o = 11. Data provided by Darlene Gordon from her PhD dissertation, "Relationships among academic self-concept, academic achievement, and persistence with self-attribution, study habits, and perceived school environment," Purdue University, 1997. Estimate the mean IQ score for all seventh-grade girls in the school district, using a 96% confidence interval. Follow the four-step process. Give your answer as an interval in the form (lower bound, upper bound). Give your numbers to two decimal places. Use software or Table C if necessary. confidence interval: Incorrect (107.43,114.03)
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