Twelve percent of the customers of a bank overdraw their accounts at least once a month. A sample of eight customers is selected. What is the probability that exactly two customers in the sample...

Twelve percent of the customers of a bank overdraw their accounts at least once a month. A sample of eight customers is selected. What is the probability that exactly two customers in the sample will overdraw their account this month

Expert Answers
changchengliang eNotes educator| Certified Educator

X is binomial distribution (n=8,p=0.12)  

P(X=2)

=8C2 .12^2  .88^6

=0.1872477...

= 18.7 %  (approx)