Random Samples from Two Normal Populations Produced the Following Statistics

Short Answer

Random samples from two normal populations produced the following statistics: s₁ = 3 n₁=30
S₂ = 4 n₂=30
What is the value of the test statistic if we wanted to test the hypothesis that the two populations differ? $\begin{array}{|c|c|}\hline\mathrm{A} & 0.750 \\\hline \mathrm{B} & 1.333 \\\hline \mathrm{C} & 1.778 \\\hline \mathrm{D} & 0.563 \\\hline\end{array}$