Purchase Solution

Sum of two random variables

Not what you're looking for?

Ask Custom Question

Z=sum of dots (uniform on {1,2,3,4,5,6}
a. M_z(s)=?
b. M_z(s)=M_x(s)^2 why?

M_z stands for the mgf of x=sum of dots when two dice are tossed

Purchase this Solution

Solution Summary

This shows how to find the sum of two random variables.

Solution Preview

See attachment

Z=sum of a pair of fair dice.

The ...

Purchase this Solution

Free BrainMass Quizzes
Know Your Linear Equations

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.

Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts