Suppose approximately 75% of all marketing personnel are extroverts, whereas abo

Question

Suppose approximately 75% of all marketing personnel are extroverts, whereas about 60% 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?

Explanation / Answer

From statistical software output, the answers will be:

a) 0.852

b) 1

c) 0.013

d) 0.010

e) 0.683

f) 0.078

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