Задача N5379 теория вероятностей доверительный интервал

5379. x̅=64, n=581, σ=26. Find the confidence interval for estimating the mean of a normal distribution with a reliability of 0.980 given a sample mean of 64, a sample size of 581, and a standard deviation of 26.

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