Задача N5705 теория вероятностей объем выборки

5705. σ=71, δ=13.2, γ=0.845 Find the minimum sample size at which, with reliability γ=0.845, the accuracy of estimating the mathematical expectation a of the general population by the sample mean is δ=13.2, if the standard deviation σ is known =71 normally distributed population.

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