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Using two different confidence levels, a researcher constructs two confidence intervals for a population mean based on one sample taken from a normal population with

Using two different confidence levels, a researcher constructs two confidence intervals for a population mean based on one sample taken from a normal population with known population variance 02 = 784. The standard error of the mean is 4.32. The confidence intervals are: Interval 1: 86.49

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978-0393123968

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