Can someone show me how to solve this?

Also if someone know how to solve it with the ti 83/84, that

would be great. If not, I'm fine as well.

Two groups were polled about their attitudes towards capital punishment. In one group 30 out of 100 favored capital punishment, and in the other group 40 out of 80 favored capital punishment. Calculate an appropriate test value to test the hypothesis that the population proportions are the same.