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Suppose approximately75%of all marketing personnel are extroverts, whereas about70%of all computer programmers are introverts. (For each answer, enter a number. Round your answers to three

Suppose approximately75%of all marketing personnel are extroverts, whereas about70%of all computer programmers are introverts. (For each answer, enter a number. Round your answers to three decimal places.)

(b)In a group of4computer programmers, what is the probability that none are introverts?

What is the probability that2or more are introverts?

What is the probability that all are introverts?

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