MATHEMATICS · Single correct · GCSE · Mathematics · Probability · Probability
Problem
A bag contains 4 white and 6 black balls. Two balls are drawn one after another without replacement. Let A be the event “the first ball is white” and B be the event “the second ball is white”. Which statement is correct?
(a) A and B are independent because P(B)=104
(b) A and B are not independent because P(A∩B)=P(A)P(B)
(c) A and B are mutually exclusive
(d) A and B are independent because P(A∩B)=254