Задача N5699 теория вероятностей объем выборки

5699. σ=21.7, δ=3.8, γ=0.922. Find the minimum sample size at which, with reliability γ=0.922, the accuracy of estimating the mathematical expectation a of the population based on the sample mean is δ=3.8, if the standard deviation σ=21.7 of a normally distributed population is known.

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