I think that university students are more likely to be registered to vote than the normal population. I sample $8$ university students to determine whether or not they are registered to vote. In the normal population, $50\%$ of the population is registered to vote. I think that $70\%$ of students will register to vote. If I have a two$-$tailed test, what is the power for my test? Assume alpha$=0\mathrm{.}05$