Assume that when adults with smartphones are randomly selected, 52 % use them in meetings or classes. if 15 adult smartphone users are randomly selected, find the probability that exactly 9 of them use their smartphones in meetings or classes.
the first sentence is just there to throw you off, so you divide 9 into 15 to find the probability of 9 people using their smartphones in a meeting of 15 people, this gives you a 60% chance.
