a. A random sample of 100 observations was drawn from a normal population. The sample variance was
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a. A random sample of 100 observations was drawn from a normal population. The sample variance was calculated to be s2 = 220. Test with α = .05 to determine whether we can infer that the population variance differs from 300.
b. Repeat Part a changing the sample size to 50.
c. What is the effect of decreasing the sample size?
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Related Book For
Statistics For Management And Economics Abbreviated
ISBN: 9781285869643
10th Edition
Authors: Gerald Keller
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