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    Compound Probability




    Hey guys, i am having a bit of trouble with this basic probability question which shows that i do not understand the basics at all.
    The question is:

    What's the chance that a .250 hitter in baseball gets at least one hit in a game. (Assume the player has five at-bats)

    Firstly, I do not understand baseball so an at-bat is not in my regular vocabulary. When I first read this question I assumed the answer would be 25% because they said what is the chance he would get a hit in a game and they already mentioned that he is a .250 hitter. I know there is more to this answer as I do not feel confident at all. Can anyone help?

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    Re: Compound Probability

    I'll reword it for you.

    Tom has a 25% chance of hitting the ball every time he goes to the plate. He goes to the plate 5 times this game. What is the probability he hits the ball at least once?
    I don't have emotions and sometimes that makes me very sad.

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    daandrew (04-18-2015)

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    Re: Compound Probability

    Quote Originally Posted by Dason View Post
    I'll reword it for you.

    Tom has a 25% chance of hitting the ball every time he goes to the plate. He goes to the plate 5 times this game. What is the probability he hits the ball at least once?
    Thank you so much, but I am still unsure. If he says that he has a 25% chance every single time out of the 5 times. Does that mean that to find the probability that he gets at least 1 hit you basically:
    25%^5 or (0.25*0.25*0.25*0.25*0.25) which is 0.0009765625 or approximately 0.098% chance that he hits it atleast once?

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    Re: Compound Probability

    That would be the probability that he gets a hit every single time. That isn't what you want.
    I don't have emotions and sometimes that makes me very sad.

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    daandrew (04-18-2015)

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    Re: Compound Probability


    Dason,
    should we consider the events as independent?
    where would would you frame this problem ? what type of?
    thanks
    Last edited by marius15; 04-26-2015 at 10:07 AM.

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