Problem N5455 probability theory confidence interval
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- x̅=15.2, n=17, σ=1.2. Find the confidence interval for estimating with reliability γ=0.9 the unknown mathematical expectation a of a normally distributed feature X of the general population, if the general standard deviation σ=1.2, sample mean x̅=15.2, sample size n=17.
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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)