Задача N5454 теория вероятностей доверительный интервал

5454. x̅=27.3, n=101, σ=3.7. 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=3.7, sample mean x̅=27.3, sample size n=101.

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)