Задача N5658 теория вероятностей объем выборки

5658. σ=1.2, δ=0.3, γ=0.975 Find the minimum sample size at which, with a reliability of 0.975, the accuracy of estimating the mathematical expectation a of the general population by the sample mean is δ=0.3, if the standard deviation σ is known =1.2 normally distributed population.

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