Задача N5709 теория вероятностей объем выборки

5709. σ=137, δ=43.1, γ=0.810 Find the minimum sample size at which, with reliability γ=0.810, the accuracy of estimating the mathematical expectation a of the general population by the sample mean is δ=43.1, if the standard deviation σ is known =137 normally distributed population.

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