Problem N5432 probability theory confidence interval
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- x̅=3.6, n=64, σ=4. The random variable X has a normal distribution with a known standard deviation σ=4. Find the confidence interval for estimating the unknown mathematical expectation а by the sample mean x̅в=3.6, if the sample size is n=64 and the reliability of the estimate is γ=0.95.
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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)