In Order to Determine Whether or Not There Is a Significant

Multiple Choice

In order to determine whether or not there is a significant difference between the mean hourly wages paid by two companies (of the same industry) , the following data have been accumulated. $$\begin{array} { l l l } & \text { Company A } & \text { Company B } \\\text { Sample size } & 80 & 60 \\\text { Sample mean } & \$ 16.75 & \$ 16.25 \\\text { Population standard deviation } &\$ 1.00 & \$ .95\end{array}$$ At the 5% level of significance, the null hypothesis

A) should be rejected.
B) should not be rejected.
C) should be revised.
D) should not be tested.