probability
posted by SNOOPY on .
find the probability of andomly selectng 7 amerans rom apool of 23 britsh peopleand 19 amerans. determine whether the event isdependent or independent, list the aroprite formula, compu your answer,

method 1
prob = (19/42)(18/41)(17/40)...(13/36) = .0018677
method 2
prob = C(19,7)/C(42,7) = .0018677
(C(19,7) means 19 choose 7, or 19!/(7!12!)