Asked by Leslie Meagan
There are 300 students enrolled in Business Statics . Historically,exam scores are normally distributedwith a standard deviation of 30.9. Your instructor randomly selected a sample of 30 examinations and finds a mean of 74.2. Determine a 90% confidence interval for the mean score for all students taking the course.
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Answered by
PsyDAG
See process in your later post.
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