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(Solved): Problem #8: Let x denote the vibratory stress ( \psi ) on a wind turbine blade at a particular win ...



Problem #8: Let

x

denote the vibratory stress (

\psi

) on a wind turbine blade at a particular wind speed in a wind tunnel. Suppose that

x

has the following probability density function (called the Rayleigh probability density function).

f(x)={(((x)/(\theta ^(2)))e^(-(x^(2))/(2\theta ^(2))),x>0),(0 otherwise ):}

(a) If

\theta =96

, find the probability that the vibratory stress is between 76 and 174 . (b) If

\theta =96

, then

86%

of the time the vibratory stress is greater than what value? Problem #8(a): Problem #8(b): Round your answer to 4 decimals. round your answer to

2

decimals



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