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The principal randomly selected 6 students to take an aptitude test. Their scores were; 84.4........81.5.....72.2...... 85.0....70.7.....86.8 Determine the 90% confidence interval for the mean score
The principal randomly selected 6 students to take an aptitude test. Their scores were; 84.4........81.5.....72.2...... 85.0....70.7.....86.8 Determine the 90% confidence interval for the mean score of all students
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