Problem N5434 probability theory confidence interval
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5434. x̅=14, n=12, σ=8. Find the confidence interval for estimating with reliability γ=0.95 the unknown mathematical expectation a of a normally distributed feature X of the general population, if the general standard deviation σ=8, the sample mean x̅v=14 and the sample size n=12.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)