Prof. Green gave three exams last semester. Scores were normally distributed on each exam. Below are scores
Question:
(a) Find the 95 percent confidence interval for the mean score on each exam.
(b) Do the confidence intervals overlap? What inference might you draw by comparing the three confidence intervals?
Transcribed Image Text:
Exam I: 81, 79, 88, 90, 82, 86, 80, 92, 86, 86 Exam 2: 87, 76, 81, 83, 100, 95, 93, 82,99,90 Exam 3: 77, 79, 74, 75, 82, 69, 74, 80, 74, 76
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a b Confidence intervals 1 and 2 overlap The scores on exam 3 are very ...View the full answer
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Related Book For
Applied Statistics In Business And Economics
ISBN: 9780073521480
4th Edition
Authors: David Doane, Lori Seward
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