Suppose an election is to take place for the leadership position. A large sample survey on the current leader indicates that 30% of respondents approve the job performance of the current leader, and 7096 disapprove. Suppose that 10 voters were selected at random and asked whether they approve (a) or disapprove the job performance of the current leader. What is the probability that 8 of these voters approve of the leader? Suppose that a researcher asks people one by one until the first person is found (b) who approves of the current leader. What is the expected number of people would the researcher need to ask? If necessary. write your answer to at {east three decimal places