5674. σ=2.6, δ=0.4, 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=0.4, if the standard deviation σ=2.6 of a normally distributed population is known.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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