A study of immunizations among school-age children in California found that some areas had rates of unvaccinated school-age children as high as 13.5% in 2014. Imagine a classroom of 20 children in one...

A study of immunizations among school-age children in California found that some areas had rates of unvaccinated school-age children as high as 13.5% in 2014. Imagine a classroom of 20 children in one such area where 13.5% of children are unvaccinated. If there are no siblings in the classroom, we are willing to consider the vaccination status of the 20 children unrelated children to be independent.

A) Obtain the probability that none of the 20 children in such classroom would be unvaccinated

B) Obtain the probability that at least one of the 20 children in such a classroom would be unvaccinated.