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5600. x̅=33.8, n=77, σ=3.3. Find the confidence interval for the mathematical expectation a of a normally distributed quantitative attribute X of the general population with reliability γ=0.95, knowing the sample mean x̅в=33.8; sample size n=77 and standard deviation σ=3.3.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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