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Math Help - joint probability

  1. #1
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    joint probability

    Two independent measurement techniques are used to evaluate the success of failure of drilling an oil well.
    The first technique has a 30% probability of resulting in a successful well.
    The second technique has a 20% probability of resulting in a successful well.
    What is, and how do you calculate, the probability of success in an area where these two techniques overlap?
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  2. #2
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    Probability that both will find oil is A*B and probability that at least one will success is A+B
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  3. #3
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    Quote Originally Posted by mattspit View Post
    Two independent measurement techniques are used to evaluate the success of failure of drilling an oil well.
    The first technique has a 30% probability of resulting in a successful well.
    The second technique has a 20% probability of resulting in a successful well.
    What is, and how do you calculate, the probability of success in an area where these two techniques overlap?
    1 - (probability that neither technique results in a successful well) = 1 - (0.7)(0.8) = ....
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