Consider the Following Set of Salary Data Calculate the Appropriate Test Statistic for a Test About

Multiple Choice

Consider the following set of salary data: $\begin{array}{lrr}\hline & \text { Men (1) } & \text { Women (2) } \\\hline \text { Sample Size } & 100 & 80 \\\text { Mean } & \$ 12,850 & \$ 13,000 \\\text { Standard Deviation } & \$ 345 & \$ 500 \\\hline\end{array}$

Calculate the appropriate test statistic for a test about $\mu _ { 1 } - \mu _ { 2 }$ .

A) $z = - 2.45$
B) $z = - 3.02$
C) $z = - 2.28$
D) $z = - 2.81$