Задача N5593 теория вероятностей доверительный интервал

5593. x̅=51, n=49, σ=0.5. Based on the sample size n=49, the arithmetic mean x̅в=51 was found. Assuming that X is a normally distributed random variable, find the confidence interval that covers the unknown mathematical expectation a with reliability γ=0.99 if the general standard deviation σ=0.5

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