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  3. suppose approximately 75% of all marketing personn

Suppose approximately 75% of all marketing personnel are extroverts, whereas about 70% of all computer programmers...

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Statistics

Suppose approximately 75% of all marketing personnel areextroverts, whereas about 70% of all computer programmers areintroverts. (For each answer, enter a number. Round your answers tothree decimal places.)

(a)At a meeting of 15 marketing personnel, what is theprobability 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 theprobability that none are introverts?

What is the probability that 3 or more are introverts?  

is the probability that all are introverts?

Please provide explanation and right answer

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