Задача N5748 теория вероятностей доверительный интервал

5748. x̅=75.11, n=36, s=6.21 Find the confidence interval for estimating the mathematical expectation a of a normal distribution with reliability γ=0.95, knowing the sample mean x̅=75.11, sample size n=36 and sample standard deviation s=6.21.

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