5698. σ=19.8, δ=5.3, γ=0.943. Find the minimum sample size at which, with reliability γ=0.943, the accuracy of estimating the mathematical expectation a of the population based on the sample mean is δ=5.3, if the standard deviation σ=19.8 of a normally distributed population is known.

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