A Pharmaceutical Company Is Testing the Effectiveness of a New $\alpha = 0.05$

Multiple Choice

A pharmaceutical company is testing the effectiveness of a new drug for lowering cholest part of this trial, they wish to determine whether there is a difference between the effectiv for women and men.
At $\alpha = 0.05$ , what is an appropriate test value?
$\begin{array}{lcc}\hline & \text { Women } & \text { Men } \\\hline \text { Sample size } & 50 & 40 \\\text { Mean effectiveness } & 7.9 & 8 \\\text { Population variance } & 3.1 & 3.6\end{array}$
ol. As

A) -0.66
B) -3.90
C) 0.39
D) -0.26