According to a study done by Nick Wilson of Otago University Wellington, the probability a randomly selected individual will cover his or her mouth

According to a study done by Nick Wilson of Otago University Wellington, the probability a randomly selected individual will cover his or her mouth with a tissue, handkerchief, or elbow when sneezing is 0.047. Suppose you sit on a mall bench and observe people's habit as they sneeze. What is the probability that among 15 randomly observed sneezing individuals at least 3 will cover their mouth?