Задача N5515 теория вероятностей доверительный интервал

5515. x̅=67, n=379, σ=22 Find the confidence interval for estimating the mathematical expectation of a normal distribution with a reliability of 0.970, knowing the sample mean 67, sample size 379, and standard deviation 22.

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