My Math Forum Probability Help Please

 Probability and Statistics Basic Probability and Statistics Math Forum

 March 31st, 2017, 03:35 AM #1 Newbie   Joined: Mar 2017 From: UK Posts: 5 Thanks: 0 Probability Help Please My daughter has this revision question and I can't help her with it. Anybody able to show me the working out required please so I can go through it with her. When a bunny and a chick have a race, the probability that the bunny wins is 0.9. When a bunny and a chick have a jumping competition, the probability that the chick wins is 0.3. If a bunny and a chick have a race and then a jumping competition, what is the probability that they will each win exactly one of the competitions?
 March 31st, 2017, 05:43 AM #2 Newbie   Joined: Mar 2017 From: UK Posts: 3 Thanks: 1 The probability of the bunny winning the race AND the jumping is 0.9 x 0.7 = 0.63 which is 63%. and the probability of the chick winning the race AND the jumping is 0.1 x 0.3 = 0.3 which is 30%. Showing this to your daughter on a tree diagram might help her to see it. Thanks from baldgeezer

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