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Help with Probably Density Function Question

  1. Mar 25, 2014 #1
    1. The problem statement, all variables and given/known data

    Problem is attached in this post

    2. Relevant equations

    Problem is attached in this post


    3. The attempt at a solution

    I can solve the integral since I know P(X) = ∫f(x)dx=1 from a to b, however I can't figure out how to derive the function from the given graph.

    Also the answer is D. 3/4.
     

    Attached Files:

  2. jcsd
  3. Mar 25, 2014 #2

    SteamKing

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    The PDF is either 0 or straight lines. Why is it so difficult to construct the PDF in a piecewise fashion?
     
  4. Mar 25, 2014 #3
    I'm not familiar with that method, could you please elaborate and/or post a link that explains how to construct a probability density function via the piecewise method?
     
  5. Mar 25, 2014 #4

    ehild

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    The probability density function is given graphically. How do you get graphically the probability from the probability density function ?

    ehild
     
  6. Mar 25, 2014 #5

    HallsofIvy

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    Do you not know how to find the function that has a straight line as its graph?
     
  7. Mar 25, 2014 #6

    LCKurtz

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    I second ehild's hint. You don't even need the equations.
     
  8. Mar 25, 2014 #7

    jbunniii

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    oops, never mind, misread
     
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