Tutorials in Topic
- Linear combinations of discrete random variables
- E(aX + bY) = aE(X) + bE(Y)
- Var(aX + bY) = a2Var(X) + b2Var(Y)
- If X has a normal distribution then so does aX + b
- If X and Y have independent normal distributions then aX + bY has a normal distribution
- If X and Y have independent Poisson distributions then X + Y has a Poisson distribution