Задача N5569 теория вероятностей доверительный интервал

5569. x̅=4, n=25, σ=3. Determine the confidence interval for estimating with reliability γ=0.97 the unknown mathematical expectation a of the normally distributed feature X of the general population, if the sample mean x̅в=4, the sample size n=25 and the general standard deviation σ=3 are known.

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