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anonymous

  • 5 years ago

let n be a radomly selected integer from 1 to 20. find the indicated probability (n is 2 given that it is even)

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  1. anonymous
    • 5 years ago
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    probability of what?

  2. sandra
    • 5 years ago
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    I think this is a conditional probability problem - that is P(A|B) with A = probability of a 2 given that the number is even

  3. sandra
    • 5 years ago
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    so intuitively, if the number is even, there are 10 even numbers between 1 and 20 inclusive

  4. sandra
    • 5 years ago
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    and one of those even numbers is 2

  5. sandra
    • 5 years ago
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    so the probability should be 1/10

  6. anonymous
    • 5 years ago
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    that makes sense.

  7. sandra
    • 5 years ago
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    the definition of P(A|B) = P(A and B)/ P(B)

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