Suppose approximately 80% of all marketing personnel areextroverts, whereas about 60% of all computer programmers areintroverts. (Round your answers to three decimal places.)
(a) At a meeting of 15 marketing personnel, what is the probabilitythat 10 or more are extroverts?
What is the probability that 5 or more are extroverts?
What is the probability that all are extroverts?
(b) In a group of 5 computer programmers, what is the probabilitythat none are introverts?
What is the probability that 3 or more are introverts?
What is the probability that all are introverts?
