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Section 6.2 Homework
5. 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 12 randomly observed individuals exactly 6 do not cover their mouth when sneezing?
(b)What is the probability that among 12 randomly observed individuals fewer than 3 do not cover their mouth when sneezing?
(c) Would you be surprised if, after observing 12 individuals, fewer than half covered their mouth when sneezing? Why?
(a) The probability that exactly 6 individuals do not cover their mouth is
(b) The probability that fewer than 3 individuals do not cover their mouth is