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#1 2009-11-03 16:03:15
- 763math
- Member
- Registered: 2009-11-03
- Posts: 2
Stats
I have been stumped on this problem, if anyone could help that would be great!
Suppose that three random variables X1, X2, X3 form a random sample from a distribution for which the mean is 5. Determine the value of E(2X1-3X2+X3-4)
Thanks
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#2 2009-11-06 07:15:11
- Sarah12
- Guest
Re: Stats
sounds can of hard.you can get someone to help you with it.
#3 2009-11-08 07:42:39
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: Stats
As long as you know the rule that E(X+Y) = E(X) + E(Y), the question is fairly easy.
Why did the vector cross the road?
It wanted to be normal.
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