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Suppose approximately80%of all marketing personnel are extroverts, whereas about65%of all computer programmers are introverts. (For each answer, enter a number. Round your answers to three

Suppose approximately80%of all marketing personnel are extroverts, whereas about65%of all computer programmers are introverts. (For each answer, enter a number. Round your answers to three decimal places.)

A) In a group of 4 computer programmers, what is the probability that none are introverts?

B) What is the probability that 2 or more computer programmers are introverts?

C) What is the probability that all computer programmers are introverts?

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