Suppose that n = 20 and s 2 = 25Assume normality. a. Compute a 99 percent confidence

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Suppose that n = 20 and s2 = 25Assume normality.

a. Compute a 99 percent confidence interval for σ2

b. Test the null hypothesis Ho: σ2 = 35 Ha : σ2 ≠ 35 at the .01 level of significance.

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Business Statistics In Practice

ISBN: 9780077534844

7th Edition

Authors: Bruce Bowerman, Richard OConnell, Emilly Murphree

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