Задача N5357 теория вероятностей доверительный интервал

5357. x̅=41, n=313, σ=27. Find the confidence interval for estimating the mean of a normal distribution with a reliability of 0.920 given a sample mean of 41, a sample size of 313, and a standard deviation of 27.

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