Задача N5702 теория вероятностей объем выборки

5702. σ=154, δ=26.3, γ=0.921 Find the minimum sample size at which, with reliability γ=0.921, the accuracy of estimating the mathematical expectation a of the general population by the sample mean is δ=26.3, if the standard deviation σ is known =154 normally distributed population.

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