What is the MGF for a random variate X with given parameters?

[TomJerry]

Question :
The mfg of a random variate X is given by M_x(t) = 0.8 e^t + 0.2)¹¹
i) Find the P(x>0)
ii) Find E[x²]

 

[HallsofIvy]

Question :
The mfg of a random variate X is given by M_x(t) = 0.8 e^t + 0.2)¹¹

Do you mean "mgf" ("moment generating function") and should that be
(0.8e^t+ 0.2)^11 or 0.8(e^t+ 0.2)^11?

i) Find the P(x>0)
ii) Find E[x²]

You seem to have the wrong idea about this board. We don't do your homework for you. Show us what you know about this problem, what you have tried, and where you are stuck.

 

[dummie]

hey , i have the same problem too, i don't know how to start at this. please help. just tell how to proceed.