The following sample was taken from a normally distributed population with a known standard deviation =

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The following sample was taken from a normally distributed population with a known standard deviation σ = 4. Test the hypothesis that the mean μ = 20 using a level of significance of 0.05 and the alternative that μ > 20:

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Statistical Methods

ISBN: 9780128230435

4th Edition

Authors: Donna L. Mohr, William J. Wilson, Rudolf J. Freund

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