Results 1 to 2 of 2

Math Help - Conditional probability

  1. #1
    Junior Member
    Joined
    Jan 2009
    Posts
    66

    Conditional probability

    A baseball player compiles the following information :

    He hits a home run in 34% of his games
    He gets a strike out in 40% of his games
    In 78% of his games he hits a home run or his team wins
    In 10% of his games he hits a home run and gets a strike out
    In 26% of his games he hits a home run and his team wins
    In 28% of his games he gets a strike out and his team wins
    In 7% of his games he hits a home run, gets a strike out and his team wins

    What is the probability that the players team wins if he doesn't hit a home run ?

    Attempt to solution:

    P(W|H')=\frac{P(W \cap H')}{P(H')}=\frac{P(H)-P(W \cap H)}{1-P(H)}

    Guys am l on the right path ? How come l get the wrong answer ?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Apr 2009
    Posts
    678
    Thanks
    1
    Quote Originally Posted by nyasha View Post
    A baseball player compiles the following information :

    He hits a home run in 34% of his games
    He gets a strike out in 40% of his games
    In 78% of his games he hits a home run or his team wins
    In 10% of his games he hits a home run and gets a strike out
    In 26% of his games he hits a home run and his team wins
    In 28% of his games he gets a strike out and his team wins
    In 7% of his games he hits a home run, gets a strike out and his team wins

    What is the probability that the players team wins if he doesn't hit a home run ?

    Attempt to solution:

    P(W|H')=\frac{P(W \cap H')}{P(H')}=\frac{P(H)-P(W \cap H)}{1-P(H)}

    Guys am l on the right path ? How come l get the wrong answer ?
    Shouldn't it be P(W)-P(W \cap H) in the numerator?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 0
    Last Post: July 22nd 2011, 02:39 AM
  2. Conditional probability?
    Posted in the Statistics Forum
    Replies: 7
    Last Post: June 17th 2011, 04:38 PM
  3. Conditional Probability using the Law of Total Probability
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: October 7th 2010, 04:01 AM
  4. Conditional Probability
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: May 16th 2010, 09:42 PM
  5. Continuous probability - conditional probability
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 1st 2009, 02:21 AM

Search Tags


/mathhelpforum @mathhelpforum