Question

According to a study done by a university​ student, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267. Suppose you sit on a bench in a mall and observe​ people's habits as they sneeze.​(a) What is the probability that among 18 randomly observed individuals exactly 4 do not cover their mouth when​ sneezing?​(b) What is the probability that among 18 randomly observed individuals fewer than 3 do not cover their mouth when​ sneezing?​(c) Would you be surprised​ if, after observing 18 individuals, fewer than half covered their mouth when​ sneezing? Why?

​​(​c) Fewer than half of 18 individuals covering their mouth would/would not be surprising because the probability of observing fewer than half covering their mouth when sneezing is ………., which is an usual/unusual event.

Answer 1