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Let X1, X2, X3 denote a random sample of size 3 from a gamma distribution with alpha=7 and theta=5.
a) Find the moment generating function of Y=X1+X2+X3
b) How is Y distributed?
 2 years ago
 2 years ago
S Group Title
Let X1, X2, X3 denote a random sample of size 3 from a gamma distribution with alpha=7 and theta=5. a) Find the moment generating function of Y=X1+X2+X3 b) How is Y distributed?
 2 years ago
 2 years ago

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MGF for a gamma distribution is M(t) = 1/(1theta*t)^alpha. So do you just plug in alpha and theta? But what about y=x1+x2+x3
 2 years ago
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