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Confidence intervals. There are three z-scores that are most often used when computing such confidence intervals.One, the most common, is 1.96 z's -- it is

Confidence intervals. There are three z-scores that are most often used when computing such confidence intervals.One, the most common, is 1.96 z's -- it is associated with a confidence interval of 95%.What are the other two?What levels of confidence do they correspond to?

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