Approximately 70% of all marketing personnel are extroverts, whereas about 65% 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?
(b) In a group of 5 computer programmers, what is the probability that none are introverts?
What is the probability that 3 or more are introverts?
What is the probability that all are introverts?
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