The IQ test scores of 74 seventh-grade girls in a midwestern school district are given. Estimate the mean IQ score for a

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The Iq Test Scores Of 74 Seventh Grade Girls In A Midwestern School District Are Given Estimate The Mean Iq Score For A 1 (154.43 KiB) Viewed 117 times

The IQ test scores of 74 seventh-grade girls in a midwestern school district are given. 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. Test Scores 115111 97 112 104 106 113109113128 128 118113124 127136106123 124 126116127 119 97 102110120103115 93 123119110 110107 105 105110 90 114 106 114 100 104 89 102 91 114 114103105111 108 130 120 132111128 118 119 86 107 100 111 103 107 112 107 103 98 96 112 112 93 confidence interval: Click to download the data in your preferred format. CSV Excel JMP Mac-Text Minitab14-18 Minitab18+ PC-Text RSPSS TI CrunchIt! Interpret the confidence interval. The interval guarantees that the interval contains 96% of all IQ test scores of seventh-grade girls in the district. 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. There is 96% confidence that the interval created captures the mean IQ of seventh-grade girls in this district. The interval guarantees that the interval contains 96% of the IQ test scores in the range of scores collected for the sample. There is 96% confidence that the interval created captures the sample mean IQ of seventh-grade girls for the data obtained.