The 80 members of a random sample of graduates of Marys Typing School indicate that their mean
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The 80 members of a random sample of graduates of Mary’s Typing School indicate that their mean salary is $22,500 with a sample standard deviation of $3,100. Construct a 99 % confidence interval for the true mean salary.
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Related Book For
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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