Thread: 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)?

Originally Posted by dwsmith

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.