Question: Why is the Z-value statistic useful in calculating a confidence interval? The Z-value approximates an average for the entire population The Z-value ties the confidence

Why is the Z-value statistic useful in calculating a confidence interval? The Z-value approximates an average for the entire population The Z-value ties the confidence interval to the normal distribution The Z-value approximates an average for the sample The Z-value can be used instead of data sampling

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