Задача N5400 теория вероятностей доверительный интервал

5400. x̅=111.96, n=64, σ=2. Find confidence intervals for estimating the mathematical expectation a of a normal distribution with a reliability of 0.95, knowing the sample mean x̅=111.96, the sample size (number of observations) n=64, and the standard deviation σ=2.

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