Hi could you help me with part B thank you

Calibri (Body) v 11 AA = E co wrap Paste BI UV AVAV Merge & Center v $ 13 X V fx A B C D E F G H 1 A study of immunizations among school-age children in California found that some areas had rates N unvaccinated children as high as 14.5%. If you have a classroom of 30 children in one such area, w answer the questions below. Assume there are no siblings in the classroom and that we are willing 4 consider the vaccination status of the children to be independent. 7 10 00 10 11 a ) What is the probability that none of the 30 children in the classroom are vaccinated? 12 Show your formula and answer here ==> 0.009099 13 14 b) What is the probability that 80% of the children in the room are vaccinated? 15 Show your formula and answer here ==> 0.145 16 17 18 you need a formula 19 note: formulas must start with = 20 21 22 23