Problem N5531 probability theory confidence interval

Problem N5531 probability theory confidence interval

5531. x̅=85.17, n=49, σ=6. Find the confidence interval for estimating the mathematical expectation with reliability γ=0.95, knowing the sample mean x̅в=85.17, the sample size n=49 and the standard deviation σ=6 of the normally distributed value X.

Additional information:

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

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