Independent Random Samples Taken at Two Companies Provided the Following

Short Answer

Independent random samples taken at two companies provided the following information regarding annual salaries of the employees.
$\begin{array}{lll}&\text { Company A }&\text { Company B }\\\text { Sample Size } & 72 & 50 \\\text { Sample Mean in } \$ 1,000) & 48 & 43 \\\text { Population Standard Deviation in } \$ 1,000) & 12 & 10\end{array}$
a. We want to determine whether or not there is a significant difference between the average salaries of the employees at the two companies. Compute the test statistic.
b. Compute the p-value; and at 95% confidence, test the hypotheses.