SOLUTION: how can i solve this quiz? Flipping a fair coin 4 times. We win x euros when we bring x crowns unless we bring a single crown so not winning anything. On average how many euros

Question 730640: how can i solve this quiz?
Flipping a fair coin 4 times. We win x euros when we bring x crowns unless we bring a single crown so not winning anything.
On average how many euros to win this game? (find the expected value)
i will use E(X)=np?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Flipping a fair coin 4 times. We win x euros when we bring x crowns unless we bring a single crown so not winning anything.
On average how many euros can you expect to win? (find the expected value)
=====
# of crowns::::::::::::: 0.......1.......2........3........4
Random winning values::: 0.......0.......2........3........4
Probabilities::::::::::::1/16.....4/16...6/16.....4/16.....1/16

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E(x) = [0 + 0 + 12 + 12 + 4]/16 = 28/16 = 1.75 euros
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Cheers,
Stan H.
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