According to a study done by a university​ student, theprobability a randomly selected individual will not cover his orher mouth when sneezing is
0.2670.267.
Suppose you sit on a bench in a mall and observe​ people'shabits as they sneeze.
​(a) What is the probability that among
1818
randomly observed individuals exactly
55
do not cover their mouth when​ sneezing?
​(b) What is the probability that among
1818
randomly observed individuals fewer than
33
do not cover their mouth when​ sneezing?
​(c) Would you be surprised​ if, after observing
1818
​individuals, fewer than half covered their mouth when​sneezing? Why?
