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Math Help - Weibull Distrib.

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    Weibull Distrib.

    The ultimate tensile strength of steel wire used to wrap concrete pipe was found to have a Weibull distrib. with \gamma=1.2, theta=270. Pressure in the pipe at a certain point may require an ultimate tensile strength of at least 300. What is the probability that a randomly selected wire will possess this strength?

    Is this just f(300)?
    Last edited by mr fantastic; April 26th 2011 at 02:01 PM.
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  2. #2
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    Quote Originally Posted by dwsmith View Post
    The ultimate tensile strength of steel wire used to wrap concrete pipe was found to have a Weibull distrib. with \gamma=1.2, theta=270. Pressure in the pipe at a certain point may require an ultimate tensile strength of at least 300. What is the probability that a randomly selected wire will possess this strength?

    Is this just f(300)?
    Just integrate the pdf from 300 to +oo. Or use the cdf in the usual way.
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