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StatisticsQ&A LibraryIn each of Exercises, assume that the population standard deviation is known and decide whether use of the z-interval procedure to obtain a confidence interval for the population mean is reasonable. Explain your answers. The sample data contain no outliers, the variable under consideration is roughly normally distributed, and the sample size is 20.Start your trial now! First week only $4.99!*arrow_forward*

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In each of Exercises, assume that the population standard deviation is known and decide whether use of the z-interval procedure to obtain a confidence interval for the population mean is reasonable. Explain your answers.

The sample data contain no outliers, the variable under consideration is roughly normally distributed, and the sample size is 20.

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