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    liso12's Avatar
    liso12 Posts: 4, Reputation: 1
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    #1

    Oct 21, 2009, 01:04 PM
    Density Function
    For a density function

    f(x) = 3 (x+4) / 14 for x=0 to x=1
    Find P (2/5 < x < 2/3)

    Please walk me through this problem.
    Thanks
    Nhatkiem's Avatar
    Nhatkiem Posts: 120, Reputation: 9
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    #2

    Oct 21, 2009, 01:11 PM

    I'm sorry, is that function P(x) or f(x)?
    liso12's Avatar
    liso12 Posts: 4, Reputation: 1
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    #3

    Oct 21, 2009, 01:14 PM
    Its function f(x)

    It's asking to find the Probability P (2/5 < x < 2/3)
    Nhatkiem's Avatar
    Nhatkiem Posts: 120, Reputation: 9
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    #4

    Oct 21, 2009, 01:24 PM

    Sorry then, I'm unfamiliar with the problem :(. I was thinking it could be something else other than probability. I will go research this a bit and hopefully be able to provide and answer. Otherwise you will have to wait for a reply from someone who has a larger knowledge based around statistics
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #5

    Oct 21, 2009, 05:38 PM
    This is a probability density function. You integrate.



    Note that
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