Approximately 70% of all marketing personnel are extroverts, while regarding 50% of all computer programmers are introverts. (Round your answers to three decimal places.)
(a) At a meeting of 15 marketing personnel, what is the probability that 10 or more are extroverts?
What is the probability that 5 or more are extroverts?
What is the probability that all are extroverts?
In a group of 4 computer programmers, what is the probability that none are introverts?
What is the probability that 2 or more are introverts?
What is the probability that all are introverts?