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A bag contains 1 gold marbles, 9 silver marbles, and 22 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? Round to the 2nd decimal place

math   Statistics-And-Probability   
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Answer #1

2> There (1+3+ t 2232 marhles i are total the bag ½ = Silven marble auBy χ3 Black marble. 32 Required bulabiliydintnibuhon table do → Colour σ hold 지 32 t3 Blach 21/ 32 1 Total 1.00 -. Expected gain. R(x). χ.r (3) 2. P (2) .. = : 32o. 03125

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Answer #2

ANSWER :


14.


Total marbles = 1 + 9 + 22 = 32


My expected value

= P(gold) * 3 + P(silver) * 2 - P(black) * 1

= 1/32 * 3 + 9/32 * 2 - 22/32 *1

= - 1/32 = - 0.03  ($) (ANSWER)

answered by: Tulsiram Garg
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