A bag contains 20 checkers --10 red and 10 black. Find the probability of selecting 2 black checkers when they are chosen at random without replacement. Determine whether the event is dependent or independent.

a) dependent; 1/4

b) dependent; 9/38

c) independent; 9/38

d) independent; 1/4

Question

A bag contains 20 checkers --10 red and 10 black. Find the probability of selecting 2 black checkers when they are chosen at random without replacement. Determine whether the event is dependent or independent. 

a)     dependent; 1/4

b)	dependent; 9/38

c)	independent; 9/38

d)	independent; 1/4

anonymous · Answer

since there is no replacement the event is dependent
and its probavility is (10/20) * (9/19)

anonymous · Answer

how do you know if its dependent or independent ?