A researcher conducts an experiment on stretching. She knowsthat the regular population has a mean flexibility score of (populationmean) 240 and standard deviation of 30 . She randomly selects 9 people to take her stretching class and anticipates that the class will lead to a 30-point increase in their stretching scores. Even though she thinks the treatment might work, she conservatively decides to use a two-tailed test and an alpha = .05.

Given this information, what is the power of the hypothesis test?