The Null Hypothesis in a One-Sample Z-Test Would Be Represented $$H _ { 0 } : \bar { X } = \mu$$

The null hypothesis in a one-sample Z-test would be represented as follows:

A) $$H _ { 0 } : \bar { X } = \mu$$
B) $$H _ { 1 } : \bar { X } = \mu$$
C) $$H _ { 0 } : \bar { X } > \mu$$
D) $$H _ { 0 } : \bar { X } < \mu$$