Find the pmfs corresponding to the following mgfs defined for a discrete random variable. Write your solutions in the form Pi y = y1 P2 y = Y2 p(y) = {: : Pk y = Yk 0 o therwise or in the form some formula y E Y p(y) otherwise for a set y to be identified, or identify the distribution by name with any parameters identified. If the function is NOT the mgf of a discrete pmf, state this and explain why.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Find the pmfs corresponding to the following mgfs defined for a discrete random variable. Write
your solutions in the form
Pi y = y1
P2 y = Y2
p(y) = {: :
Pk y = Yk
0 otherwise
or in the form
some formula y E y
p(y) :
otherwise
for a set y to be identified, or identify the distribution by name with any parameters identified.
If the function is NOT the mgf of a discrete pmf, state this and explain why.
Transcribed Image Text:Find the pmfs corresponding to the following mgfs defined for a discrete random variable. Write your solutions in the form Pi y = y1 P2 y = Y2 p(y) = {: : Pk y = Yk 0 otherwise or in the form some formula y E y p(y) : otherwise for a set y to be identified, or identify the distribution by name with any parameters identified. If the function is NOT the mgf of a discrete pmf, state this and explain why.
(a) m(t) = (et + e-t)/2, defined for t e R.
(b) m(t) = 2e', defined for t e R.
(c) For t e R
(1+2e*)3
m(t) =
27
Transcribed Image Text:(a) m(t) = (et + e-t)/2, defined for t e R. (b) m(t) = 2e', defined for t e R. (c) For t e R (1+2e*)3 m(t) = 27
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