The Most Commonly Used Confidence Intervals Are 95%, 99%, and 99.90

Essay

The most commonly used confidence intervals are 95%, 99%, and 99.90%. Thus, it is helpful to remember the corresponding α levels (which is easy), z values, and corresponding areas under the curve. Fill in the corresponding values in the table below.
$$\begin{array} { | l | l | l | l | } \hline \begin{array} { c } \text { Confidence } \\\text { interval }\end{array} & \text { Apha ( } \alpha ) & z \text { score } & \begin{array} { c } \text { Area under the } \\\text { curve (AUC) }\end{array} \\\hline 95 \% & & & \\\hline 99 \% & & & \\\hline 99.9 \% & & & \\\hline\end{array}$$