Supose X has density f (x) and Y X. You have a random sample {Y1, ...,Yn}
Question:
Supose X has density f (x) and Y Æ ¹Å¾X. You have a random sample {Y1, ...,Yn} from the distribution of Y .
(a) Find an expression for the density fY (y) of Y .
(b) Suppose f (x) Æ C exp(¡a(x)) for some known differentiable function a(x) and some C. Find C.
(Since a(x) is not specified you cannot find an explicit answer but can express C in terms of an integral.)
(c) Given the density from part
(b) find the log-likelihood function for the sample {Y1, ...,Yn} as a function of the parameters (¹,¾).
(d) Find the pair of F.O.C. for theMLE (b¹,b¾
2). (You do not need to solve for the estimators.)
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