If you want to develop a 99% confidence interval for the mean $\mu$ of a normal population, when the standard deviation $\sigma$ is known, the confidence level is __________.

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The Answer of If you want to develop a 99% confidence interval for the mean $\mu$ of a normal population, when the standard deviation $\sigma$ is known, the confidence level is __________.

If You Want to Develop a 99% Confidence Interval for the Mean