Задача N5362 теория вероятностей доверительный интервал

5362. x̅=68, n=195, σ=29. Find the confidence interval for estimating the mean of a normal distribution with a reliability of 0.920 given a sample mean of 68, a sample size of 195, and a standard deviation of 29.

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