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$\alpha$ level is the complement of the confidence level.  \end{itemize}\\  Remember: $\textbf{When $ \textbf{When  constructing confidence intervals if a confidence level is not specified use 95$\%$ 95 percent  confidence}$ \begin{itemize}  \item Since 1 − 0.95 = 0.05, if a $\alpha$ level is not specified use $\alpha$= 0.05  \end{itemize}