The Useful Life (In Years) of a Shingled Roof in Oregon

question 105

Multiple Choice

The useful life (in years) of a shingled roof in Oregon has a uniform distribution described by the probability density function below.What is the standard deviation of the useful life distribution? 1/10 for values of x between 25 and 35
F(x) =
0 everywhere else

• A)2.886
• B)3.446
• C)2.467
• D)4.890
• E)5.118

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