Once an individual has been infected with a certain disease, let X represent the time (days) that elapses before the individual becomes infectious. An article proposes a Weibull distribution with  ? = 2.2, ? = 1.5, and ? = 0.5.

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Once an individual has been infected with a certain disease, let X represent the time (days) that elapses before the individual becomes infectious. An article proposes a Weibull distribution with 

? = 2.2, ? = 1.5, and ? = 0.5.
 
P(1 < X < 2)?
P(X > 1.5)?
What are the mean and standard deviation of X

 
xª – le-(x/ß)ª
x 2 0
f(x; a, ß) =
x < 0
by x - y and x 2 0 by x > y.]
Transcribed Image Text:xª – le-(x/ß)ª x 2 0 f(x; a, ß) = x < 0 by x - y and x 2 0 by x > y.]
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