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A Certain Confidence in Interval Is 7.75<μ<9.457.75 < \mu < 9.45

Question 33

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A certain confidence in interval is 7.75<μ<9.457.75 < \mu < 9.45 Find the sample mean xˉ\bar { x } and the error of estimate E.

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Sample mean blured image = 8.60 ...

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