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Math Help - Probability question

  1. #1
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    Probability question

    A baseball team plays eight games. Each game has a 0.25 probability of winning.
    a- What is the prob of game 5 being the first win?
    b- What is the prob of their being 3 wins and 5 losses?

    Is the 0.25 just there to throw me off? This one is stumping me for some reason. Thank you!
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  2. #2
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    (n-k)+k = n = total games = 8
    k= games won
    n - k = games lost
    p = probability of winning = 0.25
    (1 - p) = probability of loosing = 0.75
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  3. #3
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    Quote Originally Posted by sclady View Post
    A baseball team plays eight games. Each game has a 0.25 probability of winning.
    a- What is the prob of game 5 being the first win?
    b- What is the prob of their being 3 wins and 5 losses?

    Is the 0.25 just there to throw me off? This one is stumping me for some reason. Thank you!

    You assume the games are independent... and so

    The prob of game 5 being the first win means the first 4 are losses so,

     <br />
(.75)^4(.25)<br />

    The second question is binomial distribution with n=8, k=3, p=.25... can you do it with that info
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