Problem N5575 probability theory confidence interval
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- x̅=6, n=900, σ=32. Determine the confidence interval for estimating with reliability γ=0.989 the unknown mathematical expectation a of the normally distributed feature X of the general population, if the sample mean x̅в=6, the sample size n=900 and the general standard deviation σ=32 are known.
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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)