From past experience, a teacher finds that the variance of midterm test scores is 76. A randomsample
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From past experience, a teacher finds that the variance of midterm test scores is 76. A randomsample of 21 midterms in her course has a sample variance of 110.
Assuming that the population is distributed normally, test whether the sample variance is different from the population variance at a 5 % level of significance.
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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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