You wish to compare the proportion of men and women who prefer chocolate ice cream. You take two separate samples of 50 men and 50 women, respectively, and find that 25 men said their favorite ice cream was chocolate, and 30 women said their favorite ice cream was chocolate. Test if the proportion of men and women who prefer chocolate ice cream are equal at alpha=0.05. What is your test statistic?

1. 3.025
2. -0.913
3. -2.000
4. -1.005