Consider the Following Set of Salary Data What Assumptions Are Necessary to Perform a Test for the r

question 48

Multiple Choice

Consider the following set of salary data: $$\begin{array} { l r r } \hline & \text { Men (1) } & \text { Women (2) } \\\hline \text { Sample Size } & 100 & 80 \\\text { Mean } & \$ 12,850 & \$ 13,000 \\\text { Standard Deviation } & \$ 345 & \$ 500 \\\hline\end{array}$$ What assumptions are necessary to perform a test for the difference in population means?

• A) The two samples were independently selected from the populations of men and women.
• B) Both of the target populations have approximately normal distributions.
• C) The population variances of salaries for men and women are equal.
• D) All of the above are necessary.