Astudy of immunizations among school‑age children in california found that some areas have rates of unvaccinated school‑age children as high as 13.5 % . let x be the number of children not vaccinated in a randomly selected classroom of 30 children in one such area. (a) what is the distribution of x ? x has a normal distribution. x has a poisson distribution. x has a binomial distribution. none of the listed distributions are correct. (b) how many unvaccinated children do we expect, on average, in randomly selected classrooms of 30 children? (enter your answer rounded to the nearest whole number.)