In Testing the Difference Between the Means of Two Normal

Short Answer

In testing the difference between the means of two normal populations with known population standard deviations the test statistic calculated from two independent random samples equals 2.56. If the test is two-tailed and the 1% level of significance has been specified, the conclusion should be: $\begin{array}{|l|l|}\hline A.&\text {to reject the null hypothesis. }\\\hline B.&\text {not to reject the null hypothesis. }\\\hline C.&\text { the test is inconclusive.}\\\hline D.&\text {None of these choices are correct. }\\\hline \end{array}$