Posted by Mary on .
An urn contains 4 green, 6 blue and 10 yellow chips.
You pay $5 to draw a chip from the urn. Here are the rules of the game:
if you draw a green chip, the dealer returns you your bet and gives you an additional $5.
if you draw a blue chip, the dealer returns you your bet and gives you $1.
if you draw a yellow chip, the dealer keeps your $5.
What is the expected value of this game? (use formula for expected value of discrete distribution)

College Stats 
PsyDAG,
I searched Google under the key words "formula for expected value of discrete distribution" to get this:
http://www.google.com/search?client=safari&rls=en&q=formula+for+expected+value+of+discrete+distribution&ie=UTF8&oe=UTF8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.