The Degrees of Freedom Used to Find the T_/2 for a Confidence

Short Answer

The degrees of freedom used to find the t_/2 for a confidence interval for the population mean? $\begin{array}{|l|l|}\hline A&\text { The degrees of freedom are \( n-2 \).}\\\hline B&\text {The degrees of freedom are \( n-3 \). }\\\hline C&\text { The degrees of freedom are \( n-1 \).}\\\hline D&\text {The degrees of freedom are \( n \). }\\\hline \end{array}$