The Ebola virus disease (EVD) case fatality rate is around 30% among West African unvaccinated patients.In the problem below, assume that the probability of death due to EVD is exactly 30% (i.e., p=0.3), and that the fatality probability is constant across all individuals infected with the virus at any time.

(a)Find the exact probability that 4 EVD patients will die in a clinic treating 6 unrelated EVD patients.

(b)Find the exact probability that 1 or more EVD patients will die in a clinic treating 6 unrelated EVD patients.

Please show detailed step by step of how you came up with your answer. If you use symbols for multiplication or division please state what you are using your symbols for. Sorry, I haven't been in school for a long time. I just want to really understand the binomial probability distribution. Thank you for your time.