# Suppose approximately 75%

Suppose approximately

75% of all marketing personnel are extroverts, whereas about 70% of all computer programmers are introverts. (For each answer, enter a number. 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 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?

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