A consulting group believes that 70% of the people in a certain county are satis?ed with their health coverage. Assuming that this is true, ?nd the probability that in a random sample of 15 people from the county:
(a) Exactly 10 are satis?ed with their health coverage, and interpret.
(b) Not more than 10 are satis?ed with their health coverage, and interpret.
(c) What is the expected number of people out of 15 that are satis?ed with their health coverage?