Complete the Table to Compare the Z and T Distributions

Essay

Complete the table to compare the z and t distributions. $$\begin{array} { c | c | c } & \mathrm { z } \text { distribution } & \mathrm { t } \text { distribution } \\\hline \text { Shape } & & \\\\\text { Mean value } & & \\\\\text { Standard deviation value } & & \\\\\text { Requirements } & &\end{array}$$