The degrees of freedom are used to determine the critical z-score for the normal distribution when calculating a confidence interval.

Name: The degrees of freedom are used to determine the critical z-score for the normal distribution when calculating a confidence interval.
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Degrees of freedom are used to determine the critical value in t-distributions, not in the normal distribution (z-score) calculations. The normal distribution uses z-scores that are not dependent on degrees of freedom.

The Degrees of Freedom Are Used to Determine the Critical