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Problem N5679 probability theory sample size

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5679. σ=6.3, δ=0.3, γ=0.975 Find the minimum sample size at which, with reliability γ=0.975, the accuracy of estimating the mathematical expectation of a normally distributed general population based on the sample mean is δ=0.3, if the mean is known standard deviation σ=6.3 of a normally distributed population.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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