The copy shop has made 20 copies of a document for you. since the defective rate is 0.1, you think there may be some defective copies in your order, so you leaf through the first ten (which are a randomly chosen subset).

if there are 2 defective copies among the 20, what is the probability that you will encounter neither of the defective copies among the 10 you examine?

x = number of copies with a defect

a. x ~ binomial

b. x ~ negative binomial

c. x ~ hypergeometric

d. x ~ poisson