Suppose That 73% of the Visitors to a Certain Barbershop

question 27

Multiple Choice

Suppose that 73% of the visitors to a certain barbershop have a beard. Let the random variable x denote the number of coming visitors that have a beard until the visitor without beard comes. What is the probability that at most three visitors with beard must come? What is the probability that more than five visitors with beard must come?

• A) ;
• B) ;
• C) ;
• D) ;
• E) ;

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