SOLUTION: A bag contains 2 gold marbles, 10 silver marbles, and 30 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $3. If
Question 1148222: A bag contains 2 gold marbles, 10 silver marbles, and 30 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $3. If it is silver, you win $2. If it is black, you lose $1.
What is your expected value if you play this game? Answer by ikleyn(52824) (Show Source): You can put this solution on YOUR website! .
Note that the total number of marbles in the box is 2+10+30 = 42 originally.
The Math expectation of the win value is
= = = of a dollar. ANSWER