Задача N5661 теория вероятностей объем выборки

5661. σ=4.2, δ=0.3, γ=0.95 Find the minimum sample size at which, with reliability γ=0.95, the accuracy of estimating the mathematical expectation of a normally distributed population based on the sample mean is δ=0.3 , if the standard deviation σ=4.2 of a normally distributed population is known.

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