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Suppose you have a weighted coin in which heads comes up with probability 3/4 and tails with probability 1/4. If you flip heads, you win 2 dollars, but if you flip tails, you lose 1 dollar.  What is the expected win of a coin flip in dollars?

 May 29, 2021
edited by ss333  May 29, 2021
edited by ss333  May 29, 2021
 #1
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{3/4 * 2   +  1/4 * (-1) ] / 2 = .625      62.5 cents      ( not positive of this answer)     Anyone else?    ~EP

 May 29, 2021
 #2
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  .{3/4 * 2   +  1/4 * (-1) ]/2=625 

 

    I've seen this Q answered by Chris    his answer is :

{3/4 * 2   +  1/4 * (-1) ]= 1.25

ElectricPavlov  Jun 2, 2021

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