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October 31, 2025, 01:36:04 am
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Author Topic: Probability Question 2  (Read 527 times)  Share 

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wildareal

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Probability Question 2
« on: August 01, 2010, 08:09:35 pm »
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An AFL umpire manages to bounce the ball well 18 times in 20 attempts. He has to bounce the ball 4 times in a quarter. What is the probability that more than 3 of them are good?
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Wildareal '11

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pooshwaltzer

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Re: Probability Question 2
« Reply #1 on: August 01, 2010, 08:27:03 pm »
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(18/20)(18/20)(18/20)(12/20) = cbf, you do it
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wildareal

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Re: Probability Question 2
« Reply #2 on: August 01, 2010, 09:17:21 pm »
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Actually Wildareal, the answer would be 1-Pr(X=0), since we want X>3.  :)
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Wildareal '11

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wildareal

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Re: Probability Question 2
« Reply #3 on: August 02, 2010, 01:47:18 pm »
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No Wildareal. It simply would be a matter of (0.9)^4
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Wildareal '11

Year 11:
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