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The degrees of freedom used to find the t /2 for a confidence interval for the population mean? A. The degrees of freedom are n

The degrees of freedom used to find the t/2 for a confidence interval for the population mean?

A. The degrees of freedom are n 2.

B. The degrees of freedom are n 3.

C. The degrees of freedom are n 1.

D. The degrees of freedom are n.

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