Задача N5373 теория вероятностей доверительный интервал

5373. x̅=66, n=428, σ=14. Find the confidence interval for estimating the mean of a normal distribution with a reliability of 0.970 given a sample mean of 66, a sample size of 428, and a standard deviation of 14.

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