probability in math

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can anyone help me with a probability question?

  • probability in math -

    Usually someone can help. Advanced college level probability questions often go unanswered.

    What is the question?

  • probability in math -

    Students in a given class were graded A, B, C, D, and F in proportions of 1:3:4:1:1, respectively.
    How much information is contained in the message
    (a) You passed
    (b) You did not get a B

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