Suppose X is a discrete random variable and k is a constant. If E(3X+k)=26 and E(2k-X)=3 , what is E(X)?
1 Answer
Jan 29, 2016
Explanation:
The calculation is nearly similar to substitution equation except for this time, you used density function as its equation.
For a discrete random variable
So, in order to find
Then, to solve for
From
Substitute