Задача N5429 теория вероятностей доверительный интервал

5429. x̅=75.17, n=36, σ=6. Find the confidence interval for estimating the mathematical expectation a of a normal distribution with a reliability of 0.95, knowing the sample mean x̅=75.17, the sample size n=36, and the standard deviation σ=6.

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