Задача N5701 теория вероятностей объем выборки

5701. σ=1.4, δ=0.3, γ=0.925. Find the minimum sample size at which, with reliability γ=0.925, the accuracy of estimating the mathematical expectation a of the population based on the sample mean is δ=0.3, if the standard deviation σ=1.4 of a normally distributed population is known.

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