Suppose that for a randomly selected high school student who has taken a college entrance exam, the probability of scoring above
650 is 0.30. A random sample of n = 10 students was selected. The mean μ of X, the number of students in the sample who have scores above 650 is ______.
The first one is correct because the angle on the opposite side is the same, and the second one is correct too because it's the same points. So you can pick either or.
