Задача N5453 теория вероятностей доверительный интервал

5453. x̅=23.2, n=37, σ=2.2. 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=2.2, sample mean x̅=23.2, sample size n=37.

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