(a) Approximately 73% of all marketing personnel are extroverts, whereas about 55% of all computer programmers are introverts.
At a meeting of 16 marketing personnel, what is the probability that 11 or more are extroverts?
What is the probability that 6 or more are extroverts?
What is the probability that all extroverts?
(b) In a group of 6 computer programmers, what is the probability that none are introverts?
What is the probability that 4 or more are introverts?
What is the probability that all are introverts?