She plans on taking a random sample of N customers and asking them whether or not they would buy coffee from the machine. And she'll then do a significance test using alpha equals 0.05 to see if the sample proportion who say yes is significantly greater than 30%. Which situation below would result in the highest power for her test? So again, pause this video and try to answer it. Well, before I even look at the choices, we could think about what her hypotheses would be. Her null hypothesis is, you could kind of view it as a status quo, no news here. And that would be that the true population proportion of people who want to buy coffee is 30%.