The state of California reported a total of 1904 cases of pertussis (whooping cough) for all of the year 2013, 12% of which involved infants younger than 6 months. Infants this young cannot be vaccinated yet and must rely on herd immunity for protection from the virus. If we took many random samples of 100 California residents diagnosed with pertussis in 2013, find the probability that there are less than 14 infants younger than 6 months. Please help