Задача N5528 теория вероятностей доверительный интервал

5528. x̅=85.08, n=196, σ=13. Find confidence intervals for estimating the mathematical expectation, normal distribution with a reliability of 0.95; knowing the sample mean x̅=85.08, the sample size n=196 and the standard deviation σ=13.

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