According to NYC DOHMH, 28.3% (0.283)of New Yorkers answer "yes" to the question, "Have you ever been told by a doctor, nurse or other health professional that you have hypertension, also called high blood pressure?"

a) In a group of 10 New Yorkers, selected at random, what is the probability that exactly two of them are hypertensive? [a] (e.g. .2555)

b) If you randomly select 10 individuals from this population, what is the probability that at most two individuals are hypertensive? [b] (e.g. .2555)

c) If you randomly select 10 individuals from this population, what is the probability that that at least one of them will hypertensive? [c] (e.g. .2555)