Задача N5403 теория вероятностей доверительный интервал

5403. x̅=114.12, n=25, σ=5. Find confidence intervals for estimating the mathematical expectation a of a normal distribution with a reliability of 0.95, knowing the sample mean x̅=114.12, the sample size (number of observations) n=25, and the standard deviation σ=5.

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