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**HELP** on
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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

How do I start solving this?